CONTROL 2 DOGS AT ONCE: This remote control dog training collar has a range of up to 800 meters. Control up to 2 collars to train dogs of any size. You can control 2 dogs at once with a single button without looking at the remote. Makes training your dog in the park or garden easier. 800 m Range: The remote control training collar offers a range of up to 800 m with the RF434Mhz frequency, making training your dog in the park or garden easy. Waterproof Receiver: Works perfectly underwater, so your dog can swim or bathe freely with the collar on. The rechargeable remote control and receiver can be charged simultaneously, so the device is always ready for use. The remote control and receiver are equipped with lithium-ion batteries and have a long service life (1-2 hours of charging is enough for 7-14 days). Automatic power-saving modes extend battery life when not in use. (Battery not included) Dog training collar with adjustable levels from 0 to 99 for electrical stimulation, vibration,