Class AB ; 400W max; 200W RMS; Built-in Bluetooth(R) 2.1 for music streaming; Streaming range of 25ft; Compatible with iPhone(R), Android(TM), smartphones, iPad(R), tablets, etc.; Dual MOSFET power supply; Marine-grade, waterproof (IP01); Dual adjustable input gain level controls; Dual L/R RCA inputs; Dual high-level speaker inputs; Power & protection LED indicators; Silver-plated speaker output terminals;