OPL5 Bluetooth Motorcycle Speaker: Waterproof bluetooth motorcycle speakers adopts latest Bluetooth V2.1 technology. built in digital power amplifier and support USB and microSD Card, MP3 format,FM Radio and Digital Clock Display. . (Kindly Notice: USB Charging NOT Supported). Motorcycle Stereo Speakers Easy to Install: Motorcycle speakers bluetooth waterproof are easy to install, Plug and Play?? Standard 12V Power connection,the mounting clamp are 7/8″ -1 1.25″ Handlebar.And it built in installation tools. Note: The speakers have directions , it should face to the head of the rider to achieve optimal effect. Bluetooth Wireless Speakers: Wireless speakers Stream your favorite music and radio channel from your smartphone.Power Output: 30W / Input Voltage: 12 Volts DC / Sound Output: 110dB /Speaker Impedance: 4~8 ??. Motorcycle Speakers: 3.5mm Audio AUX IN Available,use to input external audio signal, widely used for Motorcycle Scooter ATV Electric Bike.Bring you to have a wond