The Pyle Elite Series Bluetooth Amps provide waterproof power for all of your speaker needs. The marine grade waterproof construction and high-power efficiency ratings provide performance and reliability -- rain or shine! These multi-channel bridgeable amplifiers are perfect for the back yard, boat or even by the pool! Features include Bluetooth wireless music streaming ability. They work with all of your favorite devices and you will be able to instantly stream your favorite songs or internet radio service providers, quickly and easily (Compatible with iPhones, Androids, Smartphones, iPad, Tablets, MP3 Players, etc.). Additional features include MOSFET power supplies, built-in electronic circuitry protection, heavy-duty aluminum heat sinks and more. Enjoy versatile waterproof performance and next level sound amplification with the Pyle Elite Series Bluetooth Amps. (Models: PLMRA210BT, PLMRA410BT, PLMRA430BT, PLMRA630BT, PLMRA830BT).