ColorPet 330 Yards Remote 4 in 1 LCD Pet Dog Training Shock Collar for 2 Dogs Waterproof and Rechargeable Electronic Trainer with 100lvs Shock and Vibration - 3 Modes: Vibration Beep Light - Blue Backlight Screen Remote Transmitter Rechargeable and waterproof receiver for 2 dogs 330 yards blue backlight screen remote transmitter control electric shock devices with 3 modes: vibration/ beep/ light. Provides a professional 100 level vibration with rechargeable LCD digital remote control electric training collar. Blue Backlight LCD screen -shows the stimulation level. Over 3000 different identity codes to prevent conflicts with other e-collars. Adjustable TPU strap, it will work for small, medium and large dogs weighing from 15 to 150 lbs.