Wireless headphone pen/Wireless microphone pen
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headphone with microphone
This can serve as a wireless microphone to sing karaoke OK to use, but also can connect a microphone to use computer as a chat. RF wireless technology, distance >10M, allows you to chat more freely singing!
The size of the receiver is the similar to the flash memory and its power provided by the USB port. The effective distance is more than 10m.
Emitter inside is mini-type with 10W40 mm, .
The cupreous emitter pen is 140mm long and the diameter of #12mm.
Battery: 1 AAA1.5V(last 72 hours) .
Frequency Response: 915kHz.
Power voltage: 1.5V
MIC Sensitivity: -45dB.
Frequency Response: 857.65kHz.
Power voltage: 5V