Fonus Black Retractable 3.5mm Mono Handsfree Headset Earphone Single Earbud with Microphone for MetroPCS Samsung Galaxy Mega, MetroPCS Samsung Galaxy S 3 SCH-R530M, MetroPCS Samsung Galaxy S4 SGH-M919N, MetroPCS Samsung Admire R720

Fonus retractable earphones with a standard 3.5mm jack. These earphone will work on any standard digital audio device that uses a 3.5mm port, making the earphones extremely convenient and portable. No longer will you have to deal with the mess that is audio wires, simply pull and lengthen the wires when listening and retract when you are done. These retractable earphones are truly a great accessory for traveling and listening to music and being the perfect companion for your phone or iPod or MP4 player or laptop computer!