Specification:
1 . Operating voltage(max): 6 V
2 . Average working voltage: 3.7 V
3 . Sound pressure level: 88dB @1kHz
4 . Current consumption(Max): 300mA
5. Impedance: 9.5±15% ohm
6. Frequency : 100-5000Hz
7. Nominal input 0.5W, Maximum input 1.2W
8. Operation temperarure: -20 to +60 deg
9. Storage temperature: -30 to +70 deg
10. Size : 13*4.8mm
Skype: milyhml