Aetertek At-919C Add-on Receiver Submersible (100& Fully Waterproof) Dog Collar Updated Aetertek Receiver Replacement Aetertek AT-919C Replacement receiver Aetertek collar 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. Aetertek collar with 3 types correctional methods: beep, vibrate and shock. Respond quickly, and can keep working until you release the function button. It is easy for user to build up a series training command through combined three corrections and duration time. Aetertek receivers using 5.0MM pore size on charging port which can be charged repeatedly and never deformation and worn, 100% Safety and reliability. Aetertek receivers DC base adopt embedded injection molding process, and equipped with high-precision-waterproof ring with built-in guide slot , ensured waterproof effect over 3 hours underwater 50cm. No leaking concern when pet in the shower, swimming, diving and other under water condition