The S-Pack 1400 Bluetooth battery is the most efficient in the range. With Bluetooth technology, you can adjust the heat settings remotely using your smartphone.
Features:
- Bluetooth function
- Warm feet for up to 16 hours
- Pack comes with a USB charger
- Wall charger not supplied
- S-Pack batteries are suitable for use with the Therm-ic PowerSocks heated socks
- Heated Socks sold separately**