Nov 22, 2021 · Key Specifications/Special Features: Bluetooth Protocol A2DP1.2, HFP1.6, AVRCP1.4, HSP. Total Harmonic Distortion (THD) <0.5% (1kHz, 100dB) Headphone Frequency Response 16 - 22,000 Hz. Mic Frequency Response 100 - 10,000 Hz Impedance 32Ω. Speaker diameter:10mm.
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