Training Necklace DOGtrace 400

250 meters range. For 1 or 2 dogs. 20 levels of boost. continued momentum, beep and button ""booster"" (to send a further boost to the selected). Command: Waterproof. It works with a 3V battery (CR2). Size: 110x52x30 mm. Weight: 64g. Collar: Water resistant. It powered by a replaceable battery 3V (CR2), which offers a range of 6 months to a year. Size: 62x42x30mm. Weight: 56 g. 3 year warranty. Presented in blister packs.