Aetertek At-216D Add-on Receiver Submersible (100& Fully Waterproof) Dog Collar Updated Aetertek Receiver Replacement Aetertek AT-216D Replacement receiver collar Receiver DC base adopt embedded injection molding process, and equipped with high-precision-waterproof ring with built-in guide slot , ensure waterproof effect over 3 hours underwater 50cm. No leaking concern when pet is in the shower, swimming, diving and other under water condition Receivers are designed with 5.0MM pore size on charging port which can be charged repeatedly and never deformation and worn , 100% Safety and reliability . Use the most advanced design ,electromagnetic induction switch solution, on the power ON/OFF switch to ensure unlimited accurate switch, more convenient and reliable . . Avoid the unstable , ageing and mechanical damage for waterproof structure, to ensure the collar with excellent waterproof performance. match and got all necessary certification which meet USA and EU standard, such as CE, FCC, RTTE, ROHS and so on. 1 YEAR WARRANTY