vívosmart 3 wristband Black, small/medium

Fitness wristband with wrist-based heart rate and built-in sports functions.
Includes many fitness functions such as VO2 max calculation, fitness age, gym and strength-training exercises. Monitors your fitness by tracking your effort level day after day. Continuous heart rate tracking with Elevate™ wrist-based heart rate technology. Tracks steps, floors climbed, calories burned, intensity minutes, sleep and more. Waterproof 50m2.
Battery life: up to 5 days3