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, 3600mAh
• 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:

• Pro Merino Socks
• Pro Compression Socks
• Premium 2.0 Merino Socks Men's
• Premium 2.0 Merino Socks Women's