This item cannot be delivered to countries outside of the European union because of restrictions regarding batteries in airfreight. The C-Pack 1700B is a no-nonsense, high quality battery set for Therm-Ic insoles. The batteries have integrated clips for attaching to boots etc. - Bluetooth connectivity for remote control with your smartphone - Power settings and run times: - Power 1: 15 - 17 h - Power: 2: 7 - 9 h - Power: 3: 4 - 5 h - Run times are measured in a laboratory, and in real-life situations cold conditions tend to effect run times - Charging time approx. 8 hours - Battery capacity: 2 x 1700 mAh - What's in the box: - 2 batteries - USB charging cable - User manual Compatibility: Therm-Ic Heat 3D insoles, Heat Flat insoles and Heat Kit. Not compatible with older insoles or cables. Therm-Ic insoles sold separately.