D.T. Systems The Rapid Access Pro Trainer 1400 Electronic Dog Collar Add On Receiver(Pack of 2)

Fully waterproof Rechargeable (NiMH batt) Magnetic ON/OFF Activation Switch Collar SmartLED Indicator Light - Shows charging status and battery life status Dimensions: 2 5/8 x 2 x 1 1/2 Weight: 4.7 oz.