3 Training Modes: Beep, Vibration and 1 to 16 levels Static. 2 Channels Remote: The remote can control up to 2 receivers. Waterproof: The receiver is IPX7 waterproof and the remote is IPX5 rainproof. Long Battery Life: The rechargeable battery provides uninterrupted dog training. Adjustable Belt: It is size adjustable for different dogs.