The Plantronics M175 mobile headset offers hands-free convenience for your active lifestyle. Keep both hands on the wheel while driving and enjoy additional productivity in the office and on the go. Its convertible design can be worn as headband or earloop on either ear. You choose between greater stability and convenient small size. The adjustable noise-canceling microphone keeps your voice crystal clear, even in noisy environments. Includes one-touch volume and mute. Comfortable, durable, and lightweight, it also works with headset-ready cordless phones.