Grandstream GMD1208, Desktop Wireless Expansion Microphone, Input 220V, Output5V, 1A, Package 1xGMD1208 microphone, 1x USB cable, 1x quick installation guide, 1x Power supply, 1x GPL License, Micro-B USB port, Ability Up to 2, BT 2.1+EDR. GMD1208 features a multi-functional t ouch key works just like your Bluetooth headphone, a LED indicator for status notifications, a well-designed wired/wireless charging base, all these user-friendly features make GMD1208.