Petainer 300m Rechargeable Dog Vibration Static Dog Training Collar With Waterproof Remote Transmitter and Receiver Plus LED Display 4 in 1 Fully Waterproof and Rechargeable 300m remote control electric shock devices with 4 modes: static shock/ vibration/ beep/ light. Convenience of easy-to-read LCD screen shows the stimulation level. Over 3000 different identity codes to prevent conflicts with other e-collars. The levels can be altered by pressing Up and down button.Featured power saving design with automatic standby and memory function.