... Rate power: 3W Frequency range: 60Hz-180kHz Loudspeaker Unit: 50mm bluetooth mini speaker Input:DC5V 1000mA Rate power: 3W Impedance: 90Ω Color: red ... Loudspeaker Unit: 50mm Size:60*50mm1.pairs with most Bluetooth Devices 2.Bluetooth 2.1+ERD with supported profiles(A20P,AVRCP) 3 ... , easy connection of PC,iphone,ipad,MP3,MP4, mobile phones. bluetooth mini speaker