Plantronics Explorer 370 Rugged Bluetooth Headset Ruggedized mono Bluetooth headset that's water- and dust-resistant for outdoor work and play. Easily connects to Bluetooth phones with QuickPair technology. Contoured eartip for enhanced sound experience; comfortable, slim earloop for wearing on either ear. Military Spec 810: Water, dust and shock resistant Up to 7 hours of talk time, up to 200 hours of standby time.