【3+1 Training Mode】: The dog training collar not only has 3 modes of sound(3 different frequencies), vibration and electric shock(1-99 levels), but also a new mode: dog search light mode. This mode allows you to know exactly where your dog is, even in a well-lit area. And each training mode has its own different color, which can help you train your dog more professionally. 【500 Meter Remote Range and Waterproof】: The waterproof receiver allows dogs playing in the water to receive your instructions even 500 meters away from you. One remote control can control three dogs, but please note that our packaging box only contains one receiver. 【Soft Silicone Cap for Better Protection】: The contact point of the receiver uses the latest soft silicone material, and the flexibility of the silicone cap can better protect the dog's skin. The non-removable silicone stopper not only prevents it from falling off and getting lost, but also prevents it from being swallowed by dogs. 【Adjustable Collar