The S-Pack 700B battery has a maximum autonomy of 8 hours and is controllable via your smartphone thanks to Bluetooth technology. It has three different intensity levels, allowing the user to adjust the level of heat to suit their needs. It can be recharged using the included USB charger.
The pack includes two rechargeable batteries. Easily adaptable to compatible heated socks to provide constant heating during winter outdoor activities.
In a nutshell

Pack of two S-Pack 700B batteries

Controllable via Bluetooth on your smartphone

Heating time level 1: up to 8 hours

Heating time level 2: up to 5 hours

Heating time level 3: up to 2 hours

S-Pack batteries are compatible with Therm-ic Powersocks

Pack includes a USB charger to charge both batteries simultaneously

List of compatible heated socks
The S-Pack 700B battery is designed to be used with our Therm-ic heated ski and outdoor socks. Here is the list (from the oldest to the newest):

Heated ski socks :

Powersocks Heat Men ND
Powersocks Heat Women ND
Powersocks Heat Uni ND
Powersocks Heat Fusion Uni
Powersocks Heat Fusion Men
Powersocks Heat Fusion Women
Powersocks Heat Fusion Uni ND

Ultra Warm Comfort S.E.T®*

Ultra Warm Performance S.E.T®*

*If you're looking for batteries for the Ultra Warm S.E.T® heating socks, we recommend the S-Pack 1400B batteries.
Outdoor Heated Socks :

Powersocks Heat Multi ND

Powersocks Heat Fusion Outdoor