Aetertek At-211D LCD Display Rechargeable Training Shock Collar with 9 Level Shock Mode Vibrate and Beep for Small Dog The most advanced design, electromagnetic induction switch solution, on the power ON/OFF switch Very small but effective, especially suit for small dog even cat,suit for 8-50 lbs dogs Match and got all necessary certification which meet USA and EU standard, such as CE, FCC, RTTE, ROHS and so on .Provide 1 year warrany Environmentally friendly---Rechargeable remote and receiver, save $$$ on buying replaceable batteries .(Note :Since the receiver is very small,its battery need to be charged after every one and a half days' training . ) Beep tone function + vibration correction + 9 Levels of progressive shocks ,receiver is Water-resistant (not waterproof,can not go swim with dogs )