COMFORTABLE DESIGN: Mono headset with over-the-head design and memory foam headband and earcup provide all-day comfort. LONG LASTING BATTERY: Plantronics headset has up to 24 hours of battery life on a single charge so you can stay connected all day long. WATER-RESISTANT HEADSET: Durable materials and P2i nano coating protect Plantronics bluetooth headset from sweat, water and dust. GLOVE-FRIENDLY CONTROLS: Mono headset features on-ear controls that are easy to access, even with work gloves. Range: Up to 60 feet/20 meter with Class 1 Bluetooth enabled device NOISE CANCELING HEADPHONE: An adjustable snake boom and noise-canceling technology that eliminates up to 99.6% of transmit noise* ensures youƒ??re heard loud and clear *Per Plantronics testing of Diesel engine noise at 65dBSPL at 102Hz.