Qpets Rechargeable Remote Training System for 2 Pets SP 109 One Transmitter control can operate the training of 2 pets with range 200 meters. The 3 different static shock can help you to train the pets to have a good behaviors. coming with soft rubber electrodes and metal electrodes for owner to choose the right SHOCK LEVEL for their to train the pets. Receiver has the auto-save mode and water-resistant Receivers are rechargeable by AC power adapter or USB cable to connected to a computer.