Enhanced Hi-Fi grade full-range speaker core, outstanding sound performance.Built-in Bluetooth, the music from your phone to the device anytime and anywhere.Support AUX MP3 music playing.Support USB Stick music playing.Built-in 300W D-class amplifier, continuous boost support.7/8-1.25 inches (22-26mm) speaker installation clamp, suitable for most motorcycles, , street bikes and etc.Color: silverMaterial: metal +ABSBUILT-IN AMPLIFIERInput Voltage: DC 10-16 VInput Sensitivity: 100MV-3000MVRated Power: 2 x 20W @ 4 Power: 300WChannel: 2.0Response Frequency: 20Hz-20KHzS: 80dBSupport USB Files PlayingSupport AUX InputSPEAKER SPECIFICATIONS-Core: 3 inch Full RangeRated Power: 20WResonance Frequency: 80HzImpedance: 4Sensitivity: 84dBFrequency Response: 80Hz-16KHzPackage Contents:2 x Speaker2 x Steering 1 x Full Function Wired Control1 x SAE to Ring Terminal Power Cord1 x 3.5mm AUX CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.