SCOSCHE IPTM myTREK - Bluetooth Wireless Pulse Monitor Type: Bluetooth Accessories Charge Time: 2 Hours Operating Range: 33 Feet Battery: Rechargeable lithium-ion battery Specifications: Battery life: 5 hours Included armbands: Small, medium and large Compatibility: iPhone 3GS, iPhone 4, iPhone 4S and iPod touch (3rd and 4th generation) running iOS 5.0 or later. Dimensions: Armband Lengths: Small - 4.3; Medium - 6.3; Large - 9.6 Weight: Unit with sensor only: 1.5 oz Unit with small armband: 1.25 oz Unit with medium armband: 1.35 oz Unit with large armband: 1.45 oz
