Model:AL09
1.Frequency Range: 20Hz--20kHz
2.Maximum Power input:40mw
3.Rated Power:20mw
4.Impedance: 32 Ohm
5.Sensitivity:103dB+/-5dB
6.Speaker:Ø40mm
7.Plug Type :C2 as the pic
8.Length of Cable: About 1.2m
9.Material: ABS
