Bluetooth Motorcycle Audio Sound System Stereo Speakers FM Radio Music Amplifier High Power MP3 Speaker USB Waterproof -- Specification: Name: Bluetooth Motorcycle Audio Radio Sound System Speakers Stereo MP3 USB Waterproof FM: Cover: 87 - 108 (plusmn; 0.55MHz) Sensitivity: 11dB Distortion: 0.5% SNR: 60dB General Radio Specifications: Output: 2x10W Voltage: DC 12V Host back color: 7 color oacute;w LED speakers color: blue Speaker specifications: Voltage: 12V DC Impedance: 4 - 8 Frequency: 165Hz Effective frequency range: Fo-12Khz Distortion: = 5% Enter: 10W Maximum Output: 30W Description: This is a waterproof 2.5" motorcycle stereo speaker with built-in Bluetooth A2DP stereo and power amplifier. Now you can stream stereo music wirelessly and answer calls from your Bluetooth mobile phone or any other device with a Bluetooth adapter. Features: Built-in bluetooth (less than 6m), LCD Support answering phone, show phone number Supports USB, TF card media, Waterproof design, supports all weather conditions Charging your phone while listening to music Package includes: 1 x motorcycle audio 2 x speakers 1 x installation accessories 1 x user manual