3.7v Powersheer™ Micro Premium Bluetooth Sock Battery merino Finished with a high-neck zip

Finished with a high-neck zip closure for added protection

Up to 8 Hours of Heat Per Charge

and zippered hand pockets add everyday practicality—perfect for everything from morning commutes to weekend outings

check out our Mobile Warming® Technology Battery Compatibility Chart

the Guardian XL has your back

3.7v Powersheer™ Micro Premium Bluetooth Sock Battery merino Finished with a high-neck zipThe 3. 7 volt Premium Bluetooth battery is exclusive to our Premium BT heated sock and can be controlled with the MW Connect App. To learn more about which garments are compatible with what batteries, check out our Mobile Warming Technology Battery Compatibility Chart. Specifications: ONE BATTERY INCLUDED Rating: 3. 7volts, 2200mAh Input: DC Jack 4. 7volt@1A Micro USB 5V@0. 8A Charge Time: 5 6 hours Size Inches: 2. 8in x 1. 8in x . 5in Size Metric: