Fitness trackers are slowly becoming very popular as they can track the step count, monitor heart-rate, analyse sleep data, monitor exercises, and can make sure the users are well-hydrated over the day. What’s more – they can also show the notifications from the device they are connected to (such as your smartphone). The fitness trackers track your vital signs not just throughout the day but even when you sleep, and the battery plays a crucial role in all this. A long-lasting battery provides uninterrupted usage and an accurate data monitoring experience. Here is a list of four fitness trackers with stable battery life. Note that these products have been curated based on their availability on Amazon, and their listed features.

Garmin Rubber Vivosmart 4 Fitness Tracker

The Garmin Rubber Vivosmart 4 Fitness Tracker has a large battery that is claimed to last up to seven days. It features dedicated activity timers for walks, runs, strength training, yoga, pool swims and more. This band can also gauge blood oxygen saturation levels during the night with the wrist-based Pulse Ox sensor. Checking the Pulse Ox can help measure how your body is absorbing oxygen, which can be a useful feature for users with respiratory problems. You can turn on the feature to gauge the SpO2 overnight or use it to take a spot measurement anytime to learn more about your body. The overall fitness and health monitoring tools include the estimated wrist-based heart rate monitor, all-day stress tracker, relaxation breathing timer, VO2 max, body battery energy monitor and more. Users can get vibration alerts for all notifications, including calls, text messages, and pings from other apps as well. When the fitness band is on, it auto-adjusts to ambient light levels, so it’s visible even in bright sunlight, according to the brand. This device tracks users light, deep and REM stages of sleep, along with movement throughout the night.

Fitbit Zip Wireless Activity Tracker

The Fitbit Zip Wireless Activity Tracker features a replaceable battery that lasts up to 6 months so one can go the distance without missing a step, according to the brand. It has a built-in memory that can store up to seven days of detailed motion data procured minute by minute and saves daily totals for 23 days. This wearable tracks steps, distance, calories burned and active minutes. It is sweat, rain and splash-proof. However, the device is not swim-proof. Users can clip the Fitbit Zip to a belt, waistband, or pocket if wearing it is not feasible during any given situation. This device lets users sync stats wirelessly and automatically to 200+ iOS, Android and Windows devices. The daily stats and time can be accessed just by tapping the display.

Mi Smart Band 4

The Mi Smart Band 4 offers up to 20 days of long-lasting battery life for uninterrupted performance, according to the brand. It has a 39.9% larger (than Mi Band 3) AMOLED colour full-touch display with adjustable brightness, so everything is clear as can be. The device is compatible with Android 4.4 and higher versions and iOS 9.0 and higher versions. With music control on the band, one can change the song, increase/decrease the volume and groove on without even touching the phone. With a sturdy 5ATM waterproof build, users can take the band for a swim. This can be pretty beneficial as it auto-detects the swimming style and captures 12 detailed data points for tracking. It connects over Bluetooth 5.0, so you can expect a stable connection and long-range (based on the performance Bluetooth 5.0 promises). Health and wellness monitoring should be easy with the 24/7 automatic heart rating monitoring and alerts that warn you when your heart rate is high. Users can also receive text messages, put calls on silent, reject them, and get social media notifications instantly.

HONOR Band 5

The HONOR Band 5 has a long standby time of up to 14 days, and it saves time on frequent charging, according to the brand. For easy viewing of data, it has a 0.95-inch AMOLED touch screen with adjustable screen brightness. The band is compatible with Android 4.4 and higher versions, and iOS 9.0 and higher versions. It comes with TruSleep, which allows sleep status recognition, along with collecting and analysing the data. The HONOR Band 5’s SpO2 Monitor tracks the oxygen saturation levels in the bloodstream so users can assess how their body is adapting during workouts or at high altitudes. The smart music and volume controls let users change the song and adjust the volume without having to reach for the smartphone. The TruSeen feature allows for 24-hour real-time heart rate monitoring and warnings. Finally, it is water-resistant up to 50m (according to the brand) and can recognise various swimming styles.

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