Aetertek At-918C Dog Training Collar Replacement Receiver Waterproof Rechargeable Auto Anti Bark Aetertek AT-918C Replacement receiver collar Rechargeable and waterproof match and got all necessary certification which meet USA and EU standard, such as CE, FCC, RTTE, ROHS and so on. use the most advanced design, electromagnetic induction switch solution, on the power ON/OFF switch to ensure unlimited accurate switch, more convenient and reliable. using 5.0MM pore size on charging port which can be charged repeatedly and never deformation and worn, 100% Safety and reliability.