Qpets High Quality Remote 3 levels Shock with Vibration Trainig Collar for 2 Dogs SP 102 3 different static shock levels for each collar receiver. coming with conductive rubber and metal electrodes for owner to choose the best electrodes for effective training. Soft Antenna design will not easy to broke the antenna The vibration call can help the master communicate with the pet gently. Automatic Battery Save Mode.Replaceable batteries for collar receivers and transmitter.