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9 Jun 2018 14 Mar 2016 24 Aug 2017 Front (m 7 mm» billboard WIRELESS HEADPHONES huuvnlh sum-w mu m ”?nk" Lay-mum mun mwwm mm" mm: WWWWMWWMM ”mm m, 26 Sep 2016 billboard. Battery information. Your device is powered by a rechargeable Guide. • Headphone introduction. 1. Multi-Function button. 2. USB Charging jack Built-in microphone Your Wireless Headset has an internal rechargeable battery. Billboard Bluetooth Wireless Earbuds Headset - Black/White . Bluetooth® Neckband Stereo Headset with Microphone from Billboard are tailor-made for sports.User Guide for Bluetooth Earbuds | Wireless Headset Headphone |. iFlashJump Stereo . Yes of course, the Earbuds have a built-in microphone. Question:. After placing headphones in/on your ears, gradually turn up the volume until you reach a Built-in microphone User's Guide for Model IAHB56 v1550-01. 21 Oct 2017