d-control 600 is an electronic training collar designed for daily use. Functions of correction impulse level adjustment, sending and battery discharge are displayed on an illuminated LCD display. The product comes in a case. There is an option with a woven (600) and plastic collar (600+) available. The 610 model is delivered with an external control device for the remote control transmitter. Transmitter: Range: up to 600 m in open space Audio signal Optional adjustment of 30 correction impulse levels Option of fixed setting of a different correction impulse level (booster function) Belt clip Dimensions: 118 x 52 x 32 mm (without antenna) Antenna length: 3 cm Weight: 175 g Power supply: 2 alkaline batteries LR6 1.5 V Training of two dogs possible Receiver (Collar): Waterproof Weight 56 g (a box, battery) Length of collar 70 cm Measurements: 62 x 42 x 30 mm Power supply: CR2 3V