Universal fit for 7/8 to 1.25" handlebar. Support Bluetooth Wireless connection up to 15 meters. Support USB and SD Card MP3 files. Support USB Charging. Built with High Quality Material. Perfect for Motorcycle ATV UTV Electric Bike. Bluetooth Wireless: Stream your favorite music and radio channel from your smartphone. Compatible with iPhone 4 / 5 / 6 / 7 / 8, iPod, Samsung Android Galaxy S Note Series Note and any smartphone devices. Superb Sound Quality. Advanced Waterproof Design. Great for outdoor use. Built-in FM Radio. Easy Installation: Comes with all necessary hardware and wiring. Plug and Play. Standard 12V Power Connection. please notice that the box print a remote control on it, But this item didn't have anti-theft function and remote control function, so the item won't come with remote