Control 3 dogs at once: the remote has 3 channels. You can sync two receivers on two different channels and train your dog separately. Or you can sync two receivers to the same channel (channel A and B) and control them simultaneously. This dog training collar has 3 active modes: standard sound, vibration and shock (press the UP/DOWN button). Most bad behavior in dogs can be corrected or simply taught basic obedience commands. Remote control with 800m range and lock button: this protects your dog from unintentional corrections. It helps you control animals up to 800 meters away. You can use it anywhere, whether it’s in your garden, park or even at the beach. Waterproof and Rechargeable: Excellent waterproof technology makes our IP67 waterproof receiver. Your dog can wear this collar for water activities without worry. Equipped with a high-performance lithium battery, it can maintain a full charge and can be used for about 7-14 days after only 2 hours of charging. Suitable for all