Aetertek At-918 Rechargeable 100% Waterproof Remote Control 2 Dogs Training Shock Collar Auto Anti Bark Feature 600 Yard Training Range Purpose-designed big and glove-friendly rubber buttons to withstand repeated usage Auto anti bark feature ,600 yards remote control range,signal can pass tree ,wall ,fence etc Adjustable 9 levels for shock correction, beep and vibration function. Rechargeable Both Transmitter And Receiver ,100% Waterproof Submersible receiver Adjustable TPU strap, it will work for small, medium and large dogs weighing from 15 to 150 lbs.