Golden color small size invisible earpiece

Nonmagnetic wireless invisible earpiece, fewer electric noise, cheap price. Compatible with all induction device.

Parameter:

1.         Frequency Range: 200Hz~5400Hz
2.         Distortion Rate: <2%
3.         S/N Radio at 2KHz: >5KHz
4.         Saturated Output(OSPL 90dB): 110dB
5.         Ralative Sensitivity Limit: <-90dB
6.         Static Current: 0.80mA
7.         Battery Life (SR416SW battery):>5hrs
8.         Weight: 0.7g

 
Application scope:

•         Covert operation for security authority
•         Broadcast agency
•         Public security department
•         Lottery industry
•         Interview
•         Spy student
•         Other thinkable situation