1. Advanced RF 434Mhz Technology boosts range up to 330 yards. 2. Convenient, easy-to-read Backlight LCD screen that shows the stimulation level. 3.Silicone, white stenciled buttons against blue background for easy low light condition viewing. 4. Fits dogs from 25 to 100 lbs. 5. 4 modes: static shock, vibration, beep and light. 6. No need battery, Just charge it via the adapter if the battery runs out. About the waterproof - Water resistance Level: IP3(Can withstand water equivalent to 0.7 liters per minute if the lid is secured properly) - The collar can be worn in light drizzles but must be removed before bathing or swimming - Please note that submerging the collar in water WILL cause damage Range Information: -The advertised range is a straight-line distance between Transmitter and Receiver without obstacles in between. -Range may vary according to terrain, weather, vegetation, battery capability as well as transmission from other radio devices. Note for Use:Make sure there is no wound on your dogs neck when begin using it. Its also a good idea to brush the collar and check dogs neck daily. Package: - 1 x Remote Transmitter - 1 x Collar Receiver - 1 x Adjustable Belt - 1 x Test Bulb - 1 x Wrist Strap - 1 Set of Metal Probes - 1 x Splitter Cable - 1 x USB Cable - 1 x Charging adapter - 1 x User manual .