GTMax Black 3.5mm Metal Stereo Headset Handsfree Soft Gel Earbud with Microphone for T-Mobile Samsung Sidekick 4G SGH-T839 Brand new generic headset. Keep your hands free and on the wheel. Built-in microphone for handsfree conversations. Cord mounted ON/OFF button which lets you take calls and hang up easily. Enjoy music with superb sound quality stereo headset.