Wristband activity tracker Other Black, Graphite Touchscreen AMOLED Heart rate monitor Active minutes Calories burned Distance travelled Quality of sleep Personal goals Workout tracking Waterproof Position location Bluetooth Near Field Communication (NFC) Lithium Polymer (LiPo) Battery life: 7 day(s) Meet our most advanced fitness & health tracker with tools like an on-wrist ECG app for heart health, EDA Scan app for stress management and more. Get a 6-month membership of Fitbit Premiumand optimize your routine with Daily Readiness Score. Performance Colour display Yes Touchscreen Yes Display type AMOLED Design Control type Touch Waterproof up to 50 m Waterproof Yes Closure type Single prong strap buckle Adjustable Yes Suggested gender Unisex Band size S/L Band material Silicone Band colour Black Housing material Aluminium, Glass, Resin Product colour Black, Graphite Form factor Other Device type Wristband activity tracker Features Daily totals memory capacity 30 day(s) Memory capaci