2 Channels ControlOur dog training collar supports 2 dogs training with only 1 remote transmitter. If you have 2 dogs in your house,our dog training collar would be the perfect option for you. 3 Training ModesProvides 3 extremely efficient and safe training modes(beep,vibration and shock modes) for you to teach a dog basic obedience commands and correct your dogs inappropriate behaviors. 1-9 Levels of Static ShockDo you fear to hurt your dog in Shock Mode? Our dog training collar offers adjustable 1-9 static levels for you. You can adjust the accurate static level for your dog. Longest Remote RangeUp to 1640 FT remote control range,our dog training collar helps you to freely train your dog at backyard,park,beach,and seaside. Remote Through-Wall design can stop your dog from barking when you are in another room. Quick ChargingOur dog training collar is rechargeable. About 2 hours rapid charging,its standby time can be up to about 14 days. Designed with USB charging port,can be conveniently charged via PC,phone charger,laptop,or power bank.