Over-the-Head 3.5mm Hands-Free Mono Headset Wired Headphone with Boom Microphone for Boost Mobile Samsung Galaxy Prevail, Boost Mobile Samsung Galaxy Prevail 2, Boost Mobile Samsung Galaxy Rush, Boost Mobile Samsung Galaxy S 2 4G FONUS(TM) Brand Over the head style Wired Mono Headset with Microphone. Fits either ear comfortably. Clear communication on both ends. Comfortable bugle for long time wearing, 3.5 mm Mono Headphone with Microphone Boom, On/Off button and clip. Adjustable fillet for different head sizes. High sensitivity on microphone and driver for clear communication. The adjustable headband offers a secure fit without sacrificing comfort. Comes in Retail Package.