COMPATIBILITY: Specifically designed for SportDog collar receivers including models SD-425, SD-425S, SD-425CAMO, and SD-825 Remote Trainer POWER OUTPUT: Delivers stable 5V power supply to safely charge your SportDog collar receiver and remote trainer devices REPLACEMENT SOLUTION: Perfect replacement charging adapter for lost, damaged, or worn-out original SportDog power supply units CONVENIENT DESIGN: Compact power adapter with cord provides reliable charging for your dog training equipment PLUG AND PLAY: Simple to use charger that connects directly to your SportDog collar receiver and remote trainer 1