[4 Training Modes]: The dog training collar has 4 modes: sound, vibration, electric shock and light, which can help you train your dog more professionally. [800 meters waterproof long distance]: 100% waterproof receiver, so dogs playing in the water can receive your instructions even if they are 800 meters away. [Soft silicone cap for better protection]: The contact point of the receiver adopts the latest soft silicone material. The flexibility of the silicone cap can better protect the dog’s skin. The non-removable silicone stopper Not only prevents it from falling and losing, but also from being swallowed by dogs. [Adjustable Collar Fits Better]: The collar is made of high quality material and is gentle on your dog. This dog training collar is perfect for small, medium and large dogs weighing from 6.80 kg to 52.45 kg. The neck also has reflective markings.