A Auto Retractable Headphone, which is able to be used for listening to music and has compact auto retractable, 3.5mm interface, 0.8-1.2m pin wire, 10mm loudspeaker diameter, 32Ω impendance, 20-20000 (hz) frequency respond, 102±3dB sensitivity, 3.5mm earphone jack, can not only communicate your company’s message, but will keep your company name and logo favorable in the eyes of the prospects.
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