SmartEra&reg;Waterproof Rechargeable LCD Display Static Virbration Control Dog Anti Bark Training Collar for One Dog with 100lv Remote training collar with Rechargeable and Waterproof Provides a professional 100 level shock and 100 level Vibration with Rechargeable LCD digital remote control electric training Collar Rechargeable LCD digital remote control electric training collar,Remote control electric shock devices The 300 range is a desired value with no interference. Many factors such as weather, terran, transmission from radio devices may affect the range To save power modle the collar receiver will turn off if it is unused for 4 minutes (any movement will activate it) and the transmitter will go into STANDBY MODE if there is no operation after 20 seconds and turn off after 2 minutes. (Press the mode button for 5 seconds to activate it)