| 产品规格︰ | HP21 Portable Hand-Free makes your Mobile phone more creative and enables you to enjoy listening
Ear cover slips over ear to provide extra comfort and sound insulation.
FEATURES :
・ Clear sound, no noise
・ Low EMC / EMI
・ Hang on ear
SPECIFICATIONS :
・ Microphone directivity: Omni - directional
・ Microphone output impedance: 2.2 kOhm
・ Microphone sensitivity: -58 +/-2 dB (0 dB = 1 V/microbar)
・ Speaker impedance: 32 Ohm +/-20%
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・ Speaker sensitivity: 110 +/-5 dB
・ Speaker frequency response: 20~18 kHz
・ Speaker rated input: 1 mW
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