1).Loudspeaker Output:2.4W
2).Rating Power:1.8W
3).Frequency Response:100HZ--20KHZ
4).S/N Ratio:≥89db
5).Distortion:<0.5%
6).Playback Time:4-6 hour
7).Battery Voltage:3.7v
8).Battery Capacity:300MAH
9).Battery Charging Voltage:4.2V+0.05V
10).Charge Time DC (+2.5hours)/USB(+4hours)
11).Discharge Time MP3 Volume in 31mv(+2hours)
12).MP3 Volume in 31mv(+2hours)