Tera 4 in 1 Vibration Static Beeping Backlight LED Lighting Dog Training Collar with 330 Yard Remote Range Rechargeable & Waterproof 4 in1 functions:0-100 levels of vibration,0-100 levels of static,0-100 levels of light and 0-100 level of beep The strong static impulse can safely penetrate the dog from unwanted behavior as jumping up, digging and chasing LED light can help identify your dog easily at night, it is also can be used as a safety collar Water proof for bad weather training and keep the collar against wet inside Adapt the backlight technology much save battery