Waterproof Motorcycle 12V MP3 Player Amplifier USB Bluetooth Compatible Play Music FM Radio Matte Stereo Speaker MT473 -- Product Name: Waterproof Motorcycle AUDIO MODEL: MT473 Brand Name: AOVEISE or OEM Color: Black and Red Rated Power: 2*20W Speaker Impedance: 4~8 DC12V Power Output: Output Speaker Frequency Response: 100HZ ~ 18KHZ plusmn; 6dB Harmonic Distortion: 5% Frequency Range: 87.5 ~ 108MHZ SNR: 40dB Intermediate Frequency: 10.7MHZ Noise Sensitivity: 37dB Speaker Size: 3 inch Waterproof Level: IPX4 Material: Zinc Aluminum Alloy Net Weight: 0.82KG Features: Music Players Charger for smartphone Wireless connection FM USB flashlight Compatible with Bluetooth (3.0) MP3 Product description Zinc aluminum alloy construction Support Bluetooth-compatible function (V3.0) Format supports USB/MP3 3' waterproof speaker Support mibile phone charger (1.0A) FM radio , electronic tuning Install on the handlebar Oslash;22-30mm Note: Install on the handlebar between the oslash; 22-30mm Packaging