Mobile Warming® 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 2.0 Merino Socks, control sock temperature and monitor battery level right from your phone.

Specifications:

Two batteries included
Rating: 3.7volts, 2200mAh
Input: Micro USB 5V@0.8A
Charge Time: 5-6 Hours
Size Inches: 2.8in x 1.8in x .5in
Size Metric: 73mm x 47mm x 13.5mm
Direct Replacement for Men's & Women's Premium 2.0 Merino Sock Battery

Garments Compatible:

3.7V Powersheer Micro 2200mAh Battery Bluetooth (2-Pack),