LEXIN Waterproof Heavy Aluminum Motorcycle Audio Systems, Stereo Amplifier, Motorcycle bluetooth Speaker, Hi-fi Sound Mp3/wma Bluetooth Usb/aux Phone Charge Fits 7/8'' to 1'' Handlebar The MT485 is a waterproof 3 motorcycle stereo speaker with built-in Bluetooth A2DP stereo & power amplifier. Now you can stream the stereo music wirelessly from the Bluetooth mobile phone, or any other device with Bluetooth adaptor. Meanwhile, we have the AUX IN option for the device without Bluetooth equipped, such as iPod, CD player and etc. Wireless remote control the speaker from your mobile phone in A range of 10 meter (30 feet) New Bullet Shape Metallic Housing With Polish Chrome Treatment, Fit Excellent With Your Bike. Bluetooth A2DP Wireless Stereo System For Biking, Cycling And Racing - Max Speed: 80 Mph Waterproof Design, Handles All Weather Conditions. Jog Dial On Speaker For Power On/Off, Bluetooth Pairing, Volume Control, Play & Pause. Built-in 2 Channel Amplify, max 800W Watts Power Output Easy installation, just pair or plug to play. Fit for 7/8"(22mm)-1"(25mm) Handlebar.(please kindly check the handlebar size before placing order.) Material: Chrome Plated Metal Voice Coil Impedance: 4 ohm Frequency response: 160Hz-20kHz Signal to Noise ratio: 88dB Rated Input Power: 25W each Max Input Power: 50W ea Distortion: &lt;= 3% Sensitivity: 91 dB/W/m Colors Available: Chrome or Black Fits handlebars: 7/8&#034; to 1&#034; (Optional 1 1/4 to 1 1/2 clamp available) Power on/off Volume control Play and pause