Remote Control Dog Training Shock Collar for 2 Dogs with LCD Display (100 Levels of Shock and Vibration) Dog Electric Training Collar with LCD display. Patented design. Provides a professional 100 level shock & 100 level Vibration with LCD Remote Electric Training Collar. For mild-mannered to stubborn disposition dogs. The strong static impulse can penetrate the hair of the pet and fabric within 6mm thick. It is unnecessary to let the discharging point touch the skin of the pet, therefore it is safe for the pet. The static impulse can quickly and effectively curb the improper deeds of the pet. With the movement induction power switch in the collar receiver, it will turn on, off automatically to save power. Convenience of easy-to-read LCD screen shows the stimulation level Over 3,000 different identity codes to prevent conflicts with other e-collars. Lightweight and non-obtrusive collar. Pager non-electrical stimulation. 300 meters away from the control. Matching Receiver and Transmitter Package Includes: 1x One Remote Controller with LCD, 2x Shock Receivers, 2x Black Collar Straps, 4x AAA Batteries, 2x 4RL44 Batteries, 1x Metal Prongs & Shock Testers, 1x Manual, 1x Gift Box, 1 x SD Card Reader. We would like to suggest you to match code before using it and please be noted that you need to adjust the mode to the responding item. For example, if you want to shock, you should adjust to the shock mode. Besides, you are advised to adjust to 80-100gears for the big dog, but for the smaller dog, it should be 50 gears. And if the gear is too lower,there will be no reaction. NOTE: 		 Please put the batteries into the controller in the right way as showed in it. If not, it will damage the operation system