Aetertek AT-216 Professional Rechargeable 600 Yard Remote Dog Training Shock Collar,Beep,Vibrate and 7 Levels Updated 216D. New receiver was meticulously designed to be unbreakable and totally waterproof and submersible.600 yard remote range ,let your dog freedom,signal can pass the wall ,fence etc. Remote with auto sleep function ,save battery. with 3 types correctional methods: beep, vibrate and shock. Respond quickly, and can keep working until you release the function button. save battery mode for remote. Rechargeable & 100% waterproof (submersible feature),dog can swimming, diving and showering with the receiver. use the most advanced design, electromagnetic induction switch solution, on the power ON/OFF switch to ensure unlimited accurate switch, more convenient and reliable. 216D system can support to train up to three dogs separately. Aetertek receivers using 5.0MM pore size on charging port which can be charged repeatedly and never deformation and worn, 100% Safety and reliability.Gold-plated antenna pedestal and charging head, with outstanding signal emitted characteristic, color will not fade, never oxidized. Aetertek match and got all necessary certification which meet USA and EU standard, such as CE, FCC, RTTE, ROHS and so on. Comes with 1 year quality warranty