Thermic C-Pack 1700 B + Heat Kit Heated Insoles Set O/S

"Enjoy winter exercise to the full with the Therm-ic Insoles Set.
Each Therm-ic Insoles Set includes a pair of heated insoles and 1 pair of C-pack batteries.

Specifications:
-Fitted with ultra-fine heating elements, the insoles diffuse constant heat for immediate well-being and an optimal foot temperature.
-The C-pack 1700 batteries provide up to 17 hrs of heat.
-Some are also fitted with the Bluetooth© function, enabling you to remote-manage your heating via smartphone : Thermic Heat Control App"

Battery: C-Pack 1700 B included, 3400 mAh, Low: 17h, Mid: 9h, High: 5h
Required charger output: 5V / 2A