The D-control Edge 250 ONE dog training collars are one of the smallest electronic collars on the market with a weight of 31 g and small dimensions. With a range of 250 m and a pairing capacity of 6 dogs. The device is rechargeable. The user-friendly transmitter controls the functions of sound, vibration, stimulation pulse, and booster. The receiver is sized and weighted to fit small and medium-sized dogs.