ENGERWALL Fitness Tracker with Step Counter /Calories /Stopwatch, Activity Tracker with Heart Rate Monitor, IP68, Health Tracker with Sleep Tracker, Smartwatch, Pedometer Watch for Women Men Kids Pink sold2024 RECHARGEABLE BATTERY- No need to

RECHARGEABLE BATTERY- No need to change batteries frequently

High energy efficiency

Double Power: At Duty Cycle 20%: 1

(Pack of 10) 1-5/8" - 1-625 Inch OD Head Dia - (10 - 14 Ga - 1

ENGERWALL Fitness Tracker with Step Counter /Calories /Stopwatch, Activity Tracker with Heart Rate Monitor, IP68, Health Tracker with Sleep Tracker, Smartwatch, Pedometer Watch for Women Men Kids Pink sold2024 RECHARGEABLE BATTERY- No need toENGERWALL Fitness Tracker with Step Counter Calories Stopwatch, Activity Tracker with Heart Rate Monitor, IP68, Health Tracker with Sleep Tracker, Smartwatch, Pedometer Watch for Women Men Kids Product Features [Best Gift for Family, Friends, Yourself]: Fitness Tracker can be adjusted in length between the minimum 12. 0cm and the maximum 21cm. The total weight of the Fitness Tracker is 23. 5 grams. It is lightweight, skin friendly, and soft to wear