Includes (4) 4'' 2-Way Marine speakers: - 4'' High quality poly injection cone - butyl rubber surround - white plastic enclosure - 1” high temperature keisv voice coil - 1'' Pei neodymium dome tweeter - 100 watts RMS/ 200 watts peak - frequency Response: 100-20kHz - impedance: 4 ohms 4 channel waterproof Marine power amplifier - 4 x 100 watts RMS at 4 ohms - 4 x 200 watts Max at 4 ohms - anti-thump turn-on - soft turn on/off - RCA line input - volume gain remote control - T.H.D: 95dB - channel separation: >65dB - Frequency Response: 10Hz- 30Khz - fuse: 1 x 10a - Bluetooth 3.0 technology - Bluetooth auto connected while power on - Bluetooth auto disconnected while aux-in (3.5mm Connector) - easy and quick installed handle-bar mount bracket is included - Bluetooth console dimension: - 2.09''(W)0.83''(H) x 3.17''(L) - amplifier Dimensions: 5.9''L x 4.29''W x 1.89''H accessories: - I pod/ MP3 waterproof 3.5mm stereo to RCA Adaptor - Remote Control for volume gain - mounting accessories are included