Move more. Stress less. Sleep better. Stay on top. Wear all day. Do what you love and feel your best.. Active Zone Minutes tracks time spent in target heart rate zones.. Know when you're in fat burn, cardio, or peak zones so you can adjust your effort to match your goals.. Get daily scores to help manage stress.. Stress Management Score and guided breathing sessions can teach you healthier ways to handle stress.. Track your sleep metrics for better sleep.. Better energy starts with better rest. Track your Sleep Score, light, deep and REM sleep, sleeping heart rate and see how consistent your schedule is.. Keep an eye on your well-being.. The Fitbit app is like a control panel for your body. By watching for changes in your resting heart rate, blood oxygen, skin temperature & more, you can get to know your body and do what’s best for it.. Light as air.. That's how it feels to wear this slim, smooth silicone band. Performance. Colour display. Yes. Touchscreen. Yes. Design. Country of origin. Vietnam. Removable strap. Yes. Waterproof up to. 50 m. Waterproof. Yes. Minimum strap length. 13.7 cm. Maximum strap length. 22.1 cm. Wrist size range. 137 - 221 mm. Adjustable. Yes. Suggested gender. Unisex. Band size. S/L. Band material. Silicone. Band colour. Black. Product colour. Black. Form factor. Rectangle. Device type. Armband activity tracker. Features. Daily totals memory capacity. 30 day(s). Memory capacity. 7 day(s). Alarm clock. Yes. Timer. No. Do not disturb function. Yes. SMS notifications. Yes. Date indication. Yes. Call notifications. Yes. Find my phone function. Yes. Accelerometer. Yes. Blood oxygen sensor. Yes. Vibrating motor. Yes. Position location. Yes. Eat & drink. No. Workout tracking. Yes. Personal goals. No. Quality of sleep. Yes. Hours slept. Yes. Pedometer. No. Distance travelled. Yes. Calories burned. Yes. Active minutes. Yes. Heart rate monitor. Yes. Heart rate sensor type. Optical. Ports & interfaces. Wi-Fi. No. Bluetooth Low Energy (BLE). Yes. Bluet

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