IP67 Waterproof building and construction can be immersed up to 1 meter. Breathable light-weight armband – no need for a bulky chest strap. Wireless exercise from approximately 100 ft. far from your gadget. Battery life: 8 hours. Charge time: 2 hours. Consists of big and small armbands. 1 year restricted service warranty. Unit Width 1.75 in, Length 1.75 in, Height 0.5 in. Weight 0.0625 lbs. Scosche.