Captain America Activity Tracker for Kids with Themed App Adventure. Swim-friendly kids activity tracker with Captain America theme. Kid-tough adjustable band, features a customizable color screen and 1+ year battery life; no recharging needed. Syncs with free mobile app, which includes chore management and schedule alert tools for parents. Kids advance in Ultron’s Revenge: A Marvel Avengers Mission app adventures by meeting 60-minute daily activity goals. Tracks steps, sleep and 60 minutes of daily recommended activity. Adjustable band (with a buckle) comfortably fits a wrist measuring 130-175 mm in circumference, choose a stretchy band for a smaller size. Specifications: Strap Material: Silicone, Weight: 17,5 g, Water rating: 5 ATM, Display type: sunlight-visible, transflective 8-color memory-in-pixel (MIP). Display size: 0.43'' x 0.43'' (11 x 11 mm). Display resolution: 88 x 88 pixels. Color display: Yes. Battery life: Up to 1 year (1 x CR1632 user-replaceable). Memory/History 4 weeks of activity data.