Battery time is based on our own laboratory measurements, and may vary depending on factors such as device settings, usage patterns and operating conditions. ECG and BP feature only to be used by 22 years+. For accurate BP readings, a calibration is required every 4 weeks by BP monitor & arm cuff. Requires a Galaxy smartphone running Android 7.0 or above.

If you experience redness, itchiness, or other irritation, remove your Galaxy Watch4 and consult a medical provider prior to continued use. Such reaction may result due to allergies, wearing for prolonged periods, usage habits such as wearing it too tight, or exposure to sweat or other irritants. Given those caveats, there's plenty to like about the watch's design. There’s a virtual rotating bezel – a returning feature from the Samsung Galaxy Watch Active 2– which, in conjunction with two buttons on the right-hand side, allows for easy navigation around the smartwatch’s menus. Some may miss the physical rotating bezel from the Galaxy Watch 3, but this is a good alternative.

Samsung embraces Wear OS once again

The big fitness changes come in the form of a new 3-in-1 BioActive Sensor that enables the watch to monitor heart rate, blood oxygen levels and body composition. The last in that list is the only new feature, but this is the first time the sensors have been combined.

Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charging USB‑C Cable. Testing conducted by Apple in August 2023 using pre‑production Apple Watch Ultra 2 (GPS + Cellular) paired with iPhone; all devices tested with pre‑release software, Apple Watch Magnetic Fast Charging USB‑C Cable (Model A2515) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with region, settings and environmental factors; actual results will vary. The software on the Galaxy Watch 4 looks good and works smoothly, plus you’ll find all of the apps available on the Google Play Store are ready and waiting. This is a better solution than Tizen, but it keeps all the benefits that made Tizen software great. Samsung Galaxy Watch 4: Fitness If you want a larger smartwatch with a physical rotating bezel, you’ll want to opt for the Galaxy Watch 4 Classic. That’s a separate product line this time, although a lot of the specs are similar between that device and this one. Overall it doesn’t boast the amount of upgrades that Garmin Fenix fans were probably hoping for, but that doesn’t mean that the Fenix 7 Pro isn’t still a great watch for fitness enthusiasts, and unless you want a few more smartwatch features from the more expensive Garmin Epix Pro (Gen 2), then you’ll get on well with what’s on offer here. Advanced insights from the National Sleep Foundation is only available on a smartphone paired with the Galaxy Watch4.Typical value tested under Samsung laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Actual battery life may vary depending on network environment, usage patterns and other factors. Compatible hardware and software required. Not all content available in Spatial Audio with Dolby Atmos. Charge times are from 0–80% and 0–100% using the included Apple Watch Magnetic Fast Charging USB‑C Cable. Testing conducted by Apple in August 2023 using pre-production Apple Watch Series 9 (GPS) and Apple Watch Series 9 (GPS + Cellular), each paired with an iPhone; all devices tested with pre-release software, Apple Watch Magnetic Fast Charging USB‑C Cable (Model A2515) and Apple 20W USB‑C Power Adapter (Model A2305). Charge time varies with region, settings and environmental factors; actual results will vary. Actual user memory will vary depending on the mobile phone operator and may change after software upgrades are performed.

What really helps the TicWatch to stand out (particularly against the Pixel Watch) is its phenomenal battery life. Under the right circumstances, it’s entirely possible for the Pro 5 to get from Monday to Friday on a single charge which just absolutely decimates the competition in this area. Even the latest Samsung watches struggle to get past two-days of use. Apple Watch Series 9 has a water resistance rating of 50 metres under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. However, Apple Watch Series 9 should not be used for scuba diving, waterskiing, or other activities involving high-velocity water or submersion below shallow depth. Water resistance is not a permanent condition and can diminish over time. For additional information, see support.apple.com/en‑gb/HT205000.The GTS4 is an affordable wearable that takes design inspiration from the Apple Watch, with a squared-off case and a twistable scroll wheel on the right side. The list of available colour variations have also changed, moving to a more subdued palette in the form of Midnight, Gold, Silver and Graphite, just to name a few. These wearables are also made for health and fitness, offering several advanced features. They come with sensors to measure movement and vibration, so they know whether you’re standing, sitting still, walking or working out. This is a frustrating element, and it means this watch may not be the best choice for you if you don’t own a Samsung phone. Alternative devices from brands such as Garmin offer similar features, but across any phone. Samsung Galaxy Watch 4: Battery life