Features: Integrated microprocessor and LED switch Rechargeable 7-volt lithium battery pack Secure power plug solution Battery status monitoring and power level indication Compatibility: Compatible with all generations of Gerbing and Gerbing’s heated clothing brand products Compatible with all 7-volt vests, jackets, gloves, and accessories Dual Mode compatible with Gerbing Gyde 7V Bluetooth Temperature Controllers Heat Duration: Level 1: Up to 8 hours Level 2: Up to 5 hours Level 3: Up to 3 hours Level 4: Up to 2 hours