JJX-TECH SZJJX Wireless LCD Remote Dog Training Collar 330 Yards Water Resistant from 25 to 100 lbs, with Safe Beep, Vibration and Shock Electronic Collar Visible Control Buttons 4 MODES: static shock, vibration, beep and light. 16 levels of static shock and vibration stimulation. The 16 levels setting is easir than the 100 levels. For example, if you want to the reach the 6 levels, the 100 levels product need to press 6 times, and the 16 levels product only need to press 1 time. EASY EFFECTIVE: Easy and effective intensity levels of Stimulation/Vibration in accordance with different reponses from dogs. Convenient, easy-to-read Backlight LCD screen that shows the stimulation level. Blue backlight to ensure usage under low visibility; Silicone, white stenciled buttons against blue background for easy low light condition viewing. USER-FRIENDLY: In order to save your time, pairing is already completed. Just do as the User Guide, and the Vastar dog training collar can work for you soon. No extra batteries to buy and easy to replace AAA batteries; One remote control with two collar receivers, thoughtful for pet owners; Battery indicator to check power supply anytime; Water resistant design to ensure usage in rainy days. APPLICABLE: Fits dogs from 25 to 100 lbs with the adjustable belts from 25-65cm. 300M REMOTE CONTROL RANGE: Operational Range of up to 300m/330 Yards and 3000 Identity Codes to prevent conflicts with other E-collars. Advanced RF434Mhz Technology boosts range up to 330 yards. You can training your dog at home. (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.)