Features: 1.Dual waterproof speakers with aluminum stereo body. Built in high performance power amplifier. The speaker clip is universally installed with 7/8" to 1 1/4" handles. Supports Bluetooth wireless connection up to 15 meters. 2. 3.5mm audio jack AUX IN is available. Supports MP3 files of USB and storage card. (USB charging is not supported). FM radio, clock display. 3. Bluetooth wireless: Play your favorite music and radio channels through your smartphone. Compatible for iPhone 4/5/6/7/8/X, for iPod, for Samsung Android Galaxy S Note series and any smartphone device. 4. First class crystal sound quality. Advanced waterproof design. Digital display. The stereo unit is made of aluminum material. It is very suitable for motorcycle ATV UTV electric bicycle marine boat. Very suitable for outdoor use. 5. Easy to install: Comes with all necessary hardware and wiring. Plug and play. Standard 12V power connection. Specification: Rated voltage: 12V DC Maximum input power: 7W x 2 Rated impedance: 4-8 Bluetooth version: 2.1 + EDR Bluetooth protocol: AVRVP1.0, GAVDP1.0, ADVTP1.0, A2DP1.0 Wireless transmission range> 15m Frequency range: 20Hz-20KHz 3.5 mm audio jack: yes SD slot size: Memory Card USB: USB drive that supports mp3 format USB charging: No FM coverage: 87.5-108 MHz Sensitivity: 37dB Distortion: 0.5% S/N ratio: 40dB Speaker: 8.25 x 2.5 inch Handlebar clamp size: 7/8 to 1 1/4 in. Features: Bluetooth wireless 3.5mm audio jack AUX IN USB 2.0 Memory Card slot FM radio With clock display PackageList: 1*Speaker 1*Wrench ? Note: series and any smartphone device. First class crystal sound quality. Advanced waterproof design. Digital display. The stereo unit is made of aluminum material. It is very suitable for motorcycle ATV UTV electric bicycle marine boat. Very suitable for outdoor use. Easy to install: Comes with all necessary hardware and wiring. Plug and play. Standard 12V power connection.