3.7v Powersheer™ Micro Sock Batteries 3600mAh and Cable 2 Pack

Mobile Warming® uses only the highest quality Lithium-Ion batteries to ensure long-lasting power and battery life. The 3.7volt Premium Bluetooth® battery is exclusive to our Pro Merino and Pro Compression socks, which have heat above and below the toes. Control sock temperature and monitor battery level right from your phone or smart watch! They can also be used with Premium 2.0 Men's and Women's sock to provide longer time between charges.  Specifications: Two batteries and (USB-A to split USB-C) cable included Rating: 3.7volts, 3600mAh Input: Micro USB 5V@0.8A Charge Time: 5 Hours Size Inches: 3.5in x 2.375in x .5in Size Metric: 89mm x 60mm x 13.5mm Garments Compatible: Pro Merino Socks Pro Compression Socks Premium 2.0 Merino Socks Men's  Premium 2.0 Merino Socks Women's