Welcome to Fieldsheer Canada!
**BATTERIES SOLD INDIVIDUALLY. TO BUY A SET ADD QUANTITY 2.
Fieldsheer® uses only the highest quality Lithium-Ion batteries to ensure long-lasting power and battery life. Our batteries are designed to power your Mobile Warming product for hours ensuring you stay warm and comfortable. The 3.7volt Premium Bluetooth® battery is exclusive to our Premium BT Sock and requires MW-Connect® App to use.