... 2W(1KHZ,THD10%)2)Sensitivity: ≥65dB3)Loudspeaker Impedance: 4Ω±0.5Ω Diameter:(36/4Ω/2W)4)Lithium battery capacity: 200 mAh5)Lithium battery : 3 ... .7V~4.2V+0.05V 6)Frequency Response: 200HZ——20KHZ7)Charging time: 1 ... Yellow10)Compatible with mobile phone,Mp3,Mp4,Ipod,PDA.EtcAccessories1)Pc USB Power Supply Cable2)3.5mm Stereo connect CablePacking ...