Aetertek AT-211sw Rechargeable Small Dog Cat Training Collar with Remote Vibrate,beep Tone,9 Level Shock 350M Aetertek 211D small dog training shock collar.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 LCD display ,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 )