Patpet 330 Yards Remote Dog Training Collar - Has Shock, Vibration and Tone with Backlight LCD, Separate Silicone Buttons and Water-resistant Receiver. Best for Large, Medium and Small Dogs! The remote training collar assists you controlling your pet in a range up to 330 yards. Fits dogs from 25 to 100 lbs with the adjustable belts from 20-70cm. 3 Modes: Static shock, vibration, beep, 16 levels of static shock and vibration stimulation. Having separate buttons for each feature, you just need to press once to chose the mode you want. It is convinent for you to make it do the desired feature when in a sensitive situation. For example, if your dog is running toward the street into oncoming traffic, you just need press once to chose the model to stop him. The receivers have a cut off switch mounted on them and the transmitter goes into a standby mode when not used for a few minutes. You haven't had to replace the batteries yet. Our products have passed CE, ROHS certification.