【3 Modes Dog Training Collar】The Dog shock collar features 3 humane training modes,Vibrate , Shock and Beep.Training Collar enables you to set the right stimulation levels for your pet, which is helpful in deterring dogs from undesirable habits, can help you train your dog to behave well. 【Three-Dog Training System】Our remote features a Three-channel to support training 3 dogs simultaneously. The remote training range of this e collar is almost 1600FT, which makes sure you can enjoy the training time with your dog in the backyard, the park, at the beach, or anywhere else. 【Smart Charging Protection】300mA lithium-ion battery for the remote & receiver,smart over-voltage charging protection,reliable upgraded circuitry, contributing to better protection of the battery,super low consumption battery,2 year shut down standby time, 3 months power on standby time, 15 days use time, security lock,one-key operation, avoid any accidental operation.