Technologies

Samsung Brought Back My Favorite Feature for Its Galaxy Watch 8 and Watch 8 Classic

The company’s latest smartwatches look sharp, but the first-of-their-kind health tools could be what makes them most compelling.

While competitors release predictable updates to their smartwatches, Samsung isn’t afraid to surprise us (for better or worse) with design and feature changes each year. And with the Galaxy Watch 8 Classic in particular, announced at Samsung’s Galaxy Unpacked event, my favorite feature has made a welcome reappearance: the physical rotating bezel, a touch of romantic elegance that made me fall in love with Galaxy Watches in the first place. The Galaxy Watch 8 also has a new look and thinner frame, while the Galaxy Watch Ultra keeps the same functional, squared-off frame as before with a new Titanium blue color that will appeal to people who want a more rugged timepiece.

But it’s not just aesthetics that have changed in this year’s revisions. The company is also stepping things up when it comes to health tools, including several features I’ve never seen on a smartwatch, like noninvasive skin analysis and AI-powered coaching for sleep and running. The Galaxy Watch 8 and Watch 8 Classic also have a smarter voice assistant and are the first smartwatches with Google’s Gemini AI baked right inside, ready to handle complex tasks.

Pricing and availability

The Galaxy Watch 8 starts at $350 for the 40mm model and $380 for the 44mm one. The LTE versions are $50 more: $400 for the 40mm model and $430 for the 44mm watch.

The Galaxy Watch 8 Classic, with its rotating bezel and physical crown, comes in a single 46mm size and costs $500, or $550 for the LTE model.

The Titanium Blue version of the Galaxy Watch Ultra is $650, the same price as the original 2024 model. This version gets the same internal upgrades as the Watch 8 lineup, including a 64GB storage bump.

All models are available for preorder now with shipping starting July 25. If you reserve early from Samsung you can get $50 in Samsung credit; your wireless carrier may also have deals on the watches and Samsung’s just-announced phones.

Health and fitness features

Samsung continues to expand the Galaxy Watch’s role as a health and wellness tool, building on existing features like ECG, SpO₂ (shorthand for peripheral capillary oxygen saturation), sleep tracking and its AGEs Index, which reflects your metabolic aging process. The headliner is a new Antioxidant Index, which measures carotene (one type of antioxidant) levels in your skin with a simple five-second press of your thumb on the sensor (no needle needed). Since antioxidants help clear toxins from the body, knowing your levels can offer actionable steps for improving your health. The watch will rate your levels on a scale from low to high and then offer generic recommendations on the Samsung Health app on how you can improve your levels if they’re on the lower side.

It’s important to note that this metric isn’t clinically verified and isn’t meant to replace a medical-grade test. It’s designed to offer a baseline reading that may help you make real-time lifestyle adjustments, but it won’t provide the detailed or precise results you’d get from a traditional blood test.

There’s also a new metric called Vascular Load, which measures strain on your heart during sleep. These readings are translated into a low-to-high scale to help you understand how behaviors (like sodium or alcohol intake) may be contributing to long-term heart disease risk.

Sleep tracking gets a serious upgrade, too. A new Bedtime Guidance tool uses a three-day analysis of your circadian rhythm and sleep pressure (aka sleep debt) to recommend an ideal bedtime window. It factors in heart rate, HRV, skin temperature, and even environmental cues like room temperature or brightness (if you’ve got connected SmartThings devices). The goal: Improve your sleep quality, recovery and energy throughout the day.

The coaching isn’t just for sleep; the new Galaxy Watches are also debuting a Running Coach feature. It starts with a 12-minute running assessment that scores your fitness from level 0 (beginner) to level 10 (marathon-ready). From there, it builds a personalized four-to-six-week training plan tailored to your distance or performance goals.

Similar to Apple’s new Workout Buddy, Samsung’s Running Coach offers real-time, contextual feedback while you’re running, like pointing out a major milestone. But unlike Apple’s version, Samsung’s tool goes a step further by actually adapting your future training plans based on your progress.

Design

The two new Galaxy Watches take a page out of the Galaxy Watch Ultra’s playbook ditching the traditional circular watch face for a «cushion» design that has a round screen set inside a «squircle» frame (square with rounded edges). As someone who thought the Ultra looked too big and masculine for my wrist, I’m still not totally sold on the design shift. But I’m a sucker for that rotating bezel on the Classic (the Ultra’s is static), so I can’t help but love the look, even if it doesn’t feel like it was made for me.

The Classic also adopts the customizable quick-action button of the Ultra that also doubles as a crown wedges between the two navigation buttons.

Despite my preference for the sleeker, edgeless circular design of past Galaxy Watches, there may be some benefits to the new design, including a slimmer form factor. According to Samsung, the Galaxy Watch 8 is 11% slimmer and lighter than its predecessor. When trying it on, I was blown away by how light it felt on my wrist without the usual belly bump bulge of the body.

Pair that with a new band system, which reduces the gap between the watch and your wrist and you have a noticeably more comfortable fit. Thanks to the tighter sensor-to-skin contact, it’s also more accurate at capturing heart rate data. This is still subject to testing, but if it holds up, it may be a justified design trade-off.

The Galaxy Watch 8 comes in silver and graphite with an aluminum frame, while the Classic opts for a stainless steel finish in just silver. Size-wise, the regular Watch 8 comes in 40mm and 44mm options, while the Classic is only available in 46mm, which looks pretty large on my 6-inch (15cm) wrist and definitely leans more masculine. I can’t help but miss the days when Samsung offered more feminine options like rose gold or even just plain gold, though it’s been a while since those were part of the lineup.

Gemini on the watch

The new One UI 8 software brings a refreshed user experience that is easier to navigate. Notifications are separated by app and instant access to your six most-used apps. The Watches also takes a page from the Galaxy phone with a new «Now bar» at the bottom of the screen for quick access to active apps like timers or media controls.

But the most important software update is the addition of Gemini AI. The new Galaxy Watches are the first with Google’s AI assistant built-in, bringing more complex commands and contextual understanding to your wrist. You can ask it to check your most recent running pace, start a five-mile run and launch your workout playlist simultaneously, set a timer to boil pasta based on a recipe in your notes, adjust the font size on the watch, or have it draft a text letting a friend know you’re running late.

Since Gemini requires an internet connection to work, you’ll need to have your phone paired nearby or use an LTE version of the watch.

Battery and storage

Let’s set expectations: Just because the Galaxy Watch 8 looks like the Ultra doesn’t mean it matches the Ultra’s three-day battery life. But there’s still good news to share.

Samsung says the Watch 8 has an 8% larger battery than the Watch 7: 325 mAh vs. 300 mAh (for the 40mm), and 435 mAh vs. 425 mAh (for the 44mm). The Classic tops out at 445 mAh, which is still well below the Ultra’s 590 mAh battery. How much that translates into real-world use remains to be seen, but any boost is welcome, especially paired with the efficiency gains from the new Wear OS 6 update.

Storage also doubles across the board, with 64GB now standard (up from 32GB), including a new Titanium Blue version of the Ultra.

This is just a first look based on hands-on time. We’ll find out if these features live up to the hype when put to the test in our full review, coming soon.

Technologies

Kohler Wants to Put a Tiny Camera in Your Toilet and Analyze the Contents

The company’s new Dekoda toilet accessory is like a little bathroom detective.

Some smart litter boxes can monitor our pets’ habits and health, so having a camera in our human toilet bowls seems inevitable. That’s just what kitchen and bathroom fixture company Kohler has done for its new health and wellness brand, Kohler Health.

The $599 Dekoda clamps over the rim like a toilet bowl cleaner, pointing an optical sensor at your excretions and secretions. It then analyzes the images to detect any blood and reviews your gut health and hydration status. Depending on the plan you choose, the subscription fee is between $70 and $156 per year.

Don’t miss any of our unbiased tech content and lab-based reviews. Add CNET as a preferred Google source.

At toilet time, you sign in via a fingerprint sensor so that the device knows who’s using the facilities. (Please wash your hands before signing out or tracking your progress.) Then, check in with the app for the day’s analysis and trends over time.

Wait until you’re off the pot, though, before you start doomscrolling your health. The device has a removable, rechargeable battery and uses a USB connection.

Kohler says it secures your data via the aforementioned fingerprint scanner and end-to-end encryption, and notes that the camera uses «discreet optics,» looking only at the results, not your body parts.

«Dekoda’s sensors see down into your toilet and nowhere else,» the company says.

Kohler warns that the technology doesn’t work very well with dark toilet colors, which makes sense. I’m sure there could be an upsell model with a light on it. Maybe the company could add an olfactory sensor, since smell reveals a lot about your gut health too. It could track «session» length or buildup under the rim to alert whoever has responsibility to clean it.

Kohler must have been straining to find appropriate lifestyle photos to include with the publicity materials. Many of the images are hilarious, featuring fit-looking men and women drinking water and staring off into space contemplatively — probably thinking about gas.

Technologies

Who’s Up to Fight Mega-Corporations in the Outer Worlds 2 on Xbox Game Pass?

Save the universe by fighting one CEO at a time in The Outer Worlds 2, plus play other great games coming to Xbox Game Pass in October.

Space is the final frontier, and it’s packed with some devious mega-corporations who are out to make a buck in The Outer Worlds 2. Xbox Game Pass subscribers can fight them in the highly anticipated sequel starting on Oct. 29.

Xbox Game Pass offers hundreds of games you can play on your Xbox Series X, Xbox Series S, Xbox One, Amazon Fire TV, smart TV and PC or mobile device, with prices starting at $10 a month. While all Game Pass tiers offer you a library of games, Game Pass Ultimate ($30 a month) gives you access to the most games, as well as Day 1 games, like Hollow Knight: Silksong, added monthly.

Here are all the games subscribers can play on Game Pass soon. You can also check out other games the company added to the service in October, including Ninja Gaiden 4.

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PowerWash Simulator 2

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 23.

If you’ve ever spent hours watching people on YouTube clean dirty rugs, cars and other grimy objects, you should check out PowerWash Simulator 2. As the name suggests, this sequel is all about blasting away dirt and filth from pools, homes and other objects around town. You have a furry kitty companion, and yes, you can pet them when you’ve finished cleaning.

Bounty Star

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 23.

The American Southwest has devolved into a lawless, post-apocalyptic desert called the Red Expanse in this game. You’re out to clean the place up in this game by taking down major bounties issued by the government, and the best way to do that is by piloting and customizing a giant mech, of course. When you want to nurse your wounds, head back to your run-down garage to rest, grow and cook food and raise animals. It’s like a cozy Armored Core game.

Super Fantasy Kingdom (game preview)

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 24.

After returning from a hunting trip, you find your 8-bit kingdom wrecked in this game. You must rebuild your domain in this roguelite, city builder. But as night falls, hordes of monsters emerge to tear everything back down. Build, mine, cook and grow your home, and prepare to defend it from all dangers.

Halls of Torment

Game Pass Ultimate, Game Pass Premium and PC Game Pass subscribers can start playing on Oct. 28.

Get ready to descend into the deadly Halls of Torment in this retro, horde survival game. You can choose between 11 playable characters, each with their own playstyle, and equip various items and abilities to survive waves of enemies. This game is like Vampire Survivors, so if you like that game give this one a shot.

The Outer Worlds 2

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 29.

Clear your calendar for this sequel to the award-winning sci-fi adventure, The Outer Worlds. This time, you’re an Earth Directorate agent investigating the cause of devastating rifts that could destroy humanity. You have a new ship, new crew, new enemies and mega-corporation goons standing between you and the answers.

1000xResist

Game Pass Ultimate, Game Pass Premium and PC Game Pass subscribers can start playing on Nov. 4.

One thousand years in the future, humanity is hanging on by a thread after a disease spread by alien occupation forces people to live underground in this sci-fi adventure game. You play as Watcher, and you fulfill your duties well, until one day you make a shocking discovery. This game won a Peabody Award in 2024, and it was nominated for the Nebula Award for Best Game Writing that same year, so get ready for a story like no other.

Football Manager 26

Game Pass Ultimate and PC Game Pass subscribers can start playing on Oct. 29.

Get ready for a more immersive matchday experience in the latest installment of the Football Manager franchise. You can build a star-studded squad with new transfer tools, and this entry features official Premier League licenses and women’s football for the first time in the series’ history.

Game Pass subscribers can play the standard or Console edition of this game.

Games leaving Game Pass on Oct. 31

While Microsoft is adding those games to Game Pass, it’s also removing three others from the service on Oct. 31. So you still have some time to finish your campaign and any side quests before you have to buy these games separately.

Jusant
Metal Slug Tactics
Return to Monkey Island

For more on Xbox, discover other games available on Game Pass now and check out our hands-on review of the gaming service. You can also learn about recent changes to the Game Pass service.

Technologies

Does Charging Your Phone Overnight Damage the Battery? We Asked the Experts

Modern smartphones are protected against overcharging, but heat and use habits can still degrade your battery over time.

Plugging your phone in before you head to bed might seem like second nature. That way by the time your alarms go off in the morning, your phone has a full charge and is ready to help you conquer your day. However, over time, your battery will start to degrade. So is keeping your phone plugged in overnight doing damage to the battery?

The short answer is no. Keeping your phone plugged in all the time won’t ruin your battery. Modern smartphones are built with smart charging systems that cut off or taper power once they’re full, preventing the kind of «overcharging damage» that was common in older devices. So if you’re leaving your iPhone or Android on the charger overnight, you can relax.

That said, «won’t ruin your battery» doesn’t mean it has no effect. Batteries naturally degrade with age and use, and how you charge plays a role in how fast that happens. Keeping a phone perpetually at 100% can add extra stress on the battery, especially when paired with heat, which is the real enemy of longevity.

Understanding when this matters (and when it doesn’t) can help you make small changes to extend your phone’s lifespan.

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The science behind battery wear

Battery health isn’t just about how many times you charge your phone. It’s about how it manages voltage, temperature and maintenance. Lithium-ion batteries age fastest when they’re exposed to extreme levels: 0% and 100%.

Keeping them near full charge for long stretches puts additional voltage stress on the cathode and electrolyte. That’s why many devices use «trickle charging» or temporarily pause at 100%, topping up only when needed.

Still, the biggest threat isn’t overcharging — it’s heat. When your phone is plugged in and running demanding apps, it produces heat that accelerates chemical wear inside the battery. If you’re gaming, streaming or charging on a hot day, that extra warmth does far more harm than leaving the cable plugged in overnight.

Apple’s take

Apple’s battery guide describes lithium-ion batteries as «consumable components» that naturally lose capacity over time. To slow that decline, iPhones use Optimized Battery Charging, which learns your daily routine and pauses charging at about 80% until just before you typically unplug, reducing time spent at high voltage.

Apple also advises keeping devices between 0 to 35 degrees Celsius (32 to 95 degrees Fahrenheit) and removing certain cases while charging to improve heat dissipation. You can read more on Apple’s official battery support page.

What Samsung (and other Android makers) do

Samsung offers a similar feature called Battery Protect, found in One UI’s battery and device care settings. When enabled, it caps charging at 85%, which helps reduce stress during long charging sessions.

Other Android makers like Google, OnePlus and Xiaomi include comparable options — often called Adaptive Charging, Optimized Charging or Battery Care — that dynamically slow power delivery or limit charge based on your habits. These systems make it safe to leave your phone plugged in for extended periods without fear of overcharging.

When constant charging can hurt

Even with these safeguards, some conditions can accelerate battery wear. As mentioned before, the most common culprit is high temperature. Even for a short period of time, leaving your phone charging in direct sunlight, in a car or under a pillow can push temperatures into unsafe zones.

Heavy use while charging, like gaming or 4K video editing, can also cause temperature spikes that degrade the battery faster. And cheap, uncertified cables or adapters may deliver unstable current that stresses cells. If your battery is already several years old, it’s naturally more sensitive to this kind of strain.

How to charge smarter

You don’t need to overhaul your habits but a few tweaks can help your battery age gracefully.

Start by turning on your phone’s built-in optimization tools: Optimized Battery Charging on iPhones, Battery Protect on Samsung devices and Adaptive Charging on Google Pixels. These systems learn your routine and adjust charging speed so your phone isn’t sitting at 100% all night.

Keep your phone cool while charging. According to Apple, phone batteries perform best between 62 and 72 degrees Fahrenheit (16 to 22 degrees Celsius). If your phone feels hot, remove its case or move it to a better-ventilated or shaded spot. Avoid tossing it under a pillow or too close to other electronics, like your laptop, and skip wireless chargers that trap heat overnight.

Use quality chargers and cables from your phone’s manufacturer or trusted brands. Those cheap «fast-charge» kits you find online often deliver inconsistent current, which can cause long-term issues.

Finally, don’t obsess over topping off. It’s perfectly fine to plug in your phone during the day for short bursts. Lithium-ion batteries actually prefer frequent, shallow charges rather than deep, full cycles. You don’t need to keep it between 20% and 80% all the time, but just avoid extremes when possible.

The bottom line

Keeping your phone plugged in overnight or on your desk all day won’t destroy its battery. That’s a leftover myth from a different era of tech. Modern phones are smart enough to protect themselves, and features like Optimized Battery Charging or Battery Protect do most of the heavy lifting for you.

Still, no battery lasts forever. The best way to slow the inevitable is to manage heat, use quality chargers and let your phone’s software do its job. Think of it less as «babying» your battery and more as charging with intention. A few mindful habits today can keep your phone running strong for years.