The HBT-40 Industrial Bluetooth Communication Headset is ideal for use with cell phones, 'ruggedized' tablets, computers Bluetooth 4.0 technology pairs seamlessly with virtually any industrial smart device. Provides clear communication with the added benefit of OSHA-compliant hearing protection. High fidelity earphones provide superior audio performance. A noise-cancelling microphone ensures clear, crisp voice transmission. Comfort features make this headset easy to wear during long hours of use. And the HBT-40 headset provides 80 hours of continuous use on a full charge, so it's always ready to work when you are.Rugged construction for reliable performanceControl button ergonomically placed on the headset domeComfort-gel ear seals and soft, weather/moisture resistant head pad for all-day comfortBehind-the-Head style for use with hard hats and protective headgearM-55 noise cancelling microphoneFlex/wire boom for easy, precise microphone placementUSB charging cord and wall adapter includedUp to 80 hours of continuous use without rechargingFCC, IC, CE approvedOne Year WarrantyCODE: 42021G-02