Vivofit jr., Manual

1 year battery life no recharging needed. Physical dimensions circumference 5.4 inch. Display size( WxH) 0.39 x 0.39 inches
24/7 wearability swim friendly with 5 ATM water resistance. Case material: Polymer, strap material: Silicone
Kid tough easy to put on, the 1 size fits most, non-staining, 1 piece band stretches over your child’s hand and fits comfortably. Battery: One replaceable CR1632 coin cell