3.7v Powersheer™ Micro Sock Batteries and Cable 2 Pack handwarmer Functional features include two zippered

Functional features include two zippered front pockets

4V power output

low-profile

while the hooded design and drawcords at the waist and hood lock in comfort

and built to layer

3.7v Powersheer™ Micro Sock Batteries and Cable 2 Pack handwarmer Functional features include two zipperedDesigned specifically for Fieldsheers Premium 3. 0 Merino Men's and Women's heated socks, and the older version Premium 2. 0, the Powersheer Micro BT Battery delivers reliable warmth in a compact, calf contoured form. With built in Bluetooth wireless control you can adjust temperature and monitor battery level right from your phone or smart watch, Apple and Android compatible. Download the MW Connect App and you're ready to go.