Features 1、Using Bluetooth technology, support Bluetooth connection music playback, easy to install and set up. 2、Support U disk playback, support MP3/WMA/WAV lossless format. Support FM radio, automatically search and save stations. 3、Made of high‑quality aluminum alloy, good oil resistance and water resistance, frosted silver appearance, stylish and beautiful. 4、Feature four‑level waterproof function, power supply overvoltage protection, and reverse connection protection. 5、Suitable for motorcycles and electric bike with a handlebar diameter of 22‑30mm/0.9‑1.2in. Specification Item Type: Motorcycle Speaker Material: Aluminum Alloy Features: 1. Motorcycle handlebar audio with all-metal design 2. Suitable for men motorcycles 3. Support Bluetooth connection music playback 4. Support mobile phone charging; 5. Support FM radio function; automatic search and store station 6. Support U disk playback, support MP3/WMA/WAV lossless format, 7. Four-level waterproof function, power supply overvoltage protection, reverse connection protection; 8. With two 3-inch full-range waterproof speakers 9. Built-in horn flashing light 10. Output Power: 20W x 2 Suitable for motorcycles and electric vehicles with the handlebar diameter of 22-30mm/0.9-1.2in Wiring Instructions: Red: Positive Black: Negative electrode Blue: Radio antenna, no need to connect Package List 1 x Motorcycle Audio 1 x Manual