Vastar Professional 330 Yards Remote Training E-collar for up to 2 Dogs from 25 to 100 lbs, with Safe Beep, Vibration and Shock Electronic Collar with Silicone, Visible Control Buttons Advanced RF434Mhz Technology boosts range up to 330 yards. You can training your dog at home. 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. Convenient, easy-to-read Backlight LCD screen that shows the stimulation level. Silicone, white stenciled buttons against blue background for easy low light condition viewing. 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. Fits dogs from 25 to 100 lbs with the adjustable belts from 20-70cm. No extra batteries to buy and easy to replace AAA batteries