The S-Pack 1400B battery has a maximum autonomy of 16 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 1400B batteries

Controllable via Bluetooth on your smartphone

Heating time level 1: up to 16 hours

Heating time level 2: up to 8 hours

Heating time level 3: up to 5 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 1400B 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®

Outdoor Heated Socks :

Powersocks Heat Multi ND

Powersocks Heat Fusion Outdoor