Features: - Dual Full Range 3.5 in. 300W waterproof motorcycle stereo speaker built-in Bluetooth wireless and AUX wired function and power amplifier.  - Now you can stream the stereo music and radio wirelesly from the Bluetooth smartphone, or any other device with Bluetooth adapter.  - Full-Range 4" Speakers with Heavy Duty Handlebar Clamp.  - IP56 Waterproof Rating.  - 360 Degree All Direction Swivel.  - Built-in two Class-D Amplified Speakers.  - Wireless Bluetooth Streaming Music and Radio.  - AUX wired connection available.  - Full-function wired control.  - Easy Installation with SAE Connector.  - Plug and Play.    Specification: - Color:Chrome;  - Input sensitivity:100mv-3000mv;  - Rated Voltage:10-16V DC;  - Rated Input Power:2 x 20W;  - Max Input Power:300W;  - Rated impedance:4Ω;  - Bluetooth Ver.:4.1+EDR;  - Wireless transmission range:> 15m;  - Frequency range:20Hz - 20KHz;  - S/N:> 80db;  - Sensitivity:84db;  - Amplifier:Class-D;  - Frequency Response:80hz-16khz;    Package included: 2 x Speaker;  1 x Wired Control;  1 x Set Handlebar Clamp