Characteristic: Bluetooth motorcycle speaker has built in digital amplifier, supports 3.5mm audio jack AUX, USB and memory cards (not included), MP3 format, FM radio and digital clock display. Application: The bluetooth speaker is perfect for motorcycle, scooter, ATV, electric bike, etc, IP54 waterproof rating, perfect for outdoor use. Please note that USB charging is not supported. Bluetooth Wireless Speaker: The wireless speaker streams your favorite music and radio channels from your smartphone. power output is 30W, sound output is 110DB, speaker impedance is 4‑8Ohm. Easy Installation: Motorcycle speaker Bluetooth waterproof is easy to install, plug and play, standard 12V power connection, built‑in installation tool, suitable for 7/8‑1.25 inch handlebars. Wide Compatibility: Motorcycle bluetooth stereo speaker is compatible with for OS Phone 6 7 8 X XR XS SE 11 12 13 Pro Max, support for Android device, support for Galaxy S Note series. Connections up to 10m.