1Collar is 16-68cm adjustable, suitable for small, medium and large dogs. 2Battery type: Rechargeable batteries for collar receiver and transmitter, charge at the same time, and the general charging time is 2 hours. 3Remote control range: up to 300 yards (about 300 meters). 4Waterproof function: the receiver is deeply waterproof. 5Level adjustment: 100 levels, adjust the intensity as needed.
