Super buy LCD 100LV 300Meter Level Electric Shock Vibration Remote Pet Dog Training Collar 300 yards effective range 100 levels of Vibration/Static Shock/Beep Power saving into STANDBY MODE for transmitter without operation for 20s, and turn off after 2 mins. The receiver will turn off if it is unused for 4 mins Display: LCD;Suitable For:Small, Medium, Large Gogs Size:6.5 x 5.3 x 1.7 inch