Welcome to Fieldsheer Canada!
This Dual pack of Powersheer® Micro Rechargeable Li-ion batteries are compatible with Fieldsheer Standard Heated Socks, Thermal Heated Socks, and Merino Heated Socks. Control your heat levels on your socks by a press of the battery button to select between High, Medium and Low heat. Recharge using the included Micro USB to USB cable for hours of heat.
*When using 5V 1A USB wall charger