Plantronics MX300 White/Black Retractable Mobile Headset for most phones with standard 2.5mm headset jack - Audiovox, Blackberry, Kyocera, LG, Samsung, Sanyo, Tr?o Superior Comfort: Unique Flex Grip Design for comfortable fit. Quality Sound: WindSmart technology for optimal voice transmission. Retractable Cord: Stows neatly. Easy to put on and take off. Wearable Design: Easily attaches to clothing, bags and seatbelts with integrated clip. Unparalleled comfort with unique Flex Grip design