Andoer WICOOL Bone Conduction Bluetooth Headset Wireless Sports Headphones Bluetooth V4.1 + EDR Sweat-proof Hands-free w/Mic for iPhone Samsung Laptops Tablets MP3 All Bluetooth-enabled Devices REVOLUTIONARY BONE CONDUCTION TECHNOLOGY - This revolutionary Bluetooth headset uses advanced bone conduction technology to transmit music to the internal ear through the cranial bones - thus eliminating the need to put the headphones directly into your ears and the possibility of impairing your hearing capability. This is achieved by converting sound into vibrations. WATERPROOF AND SWEAT-PROOF DESIGNED FOR SAFETY - The headset is designed to be waterproof such that you can comfortably use it either on the beach, in the rain or while riding on a boat. The headset doesn't fit directly into ears but rests slightly in front of ears, thus doesn't block the external sound completely, making it safe for use even while driving - as you can hear the honking of the car or anything similar. HIGH CLARITY AND SUPERIOR SOUND - The use of advanced transducer to convert electrical signals to vibrations ensures high clarity sound being transmitted. Even the world class wearable technologies like google-glass are employing bone conduction technology in their devices to enhance the sound experience. THE LATEST BLUETOOTH 4.1 CHIP TECHNOLOGY - British imported Bluetooth chip, stable signal transmission, low energy-consumption, support simultaneously connecting to two Bluetooth-enabled devices. SMART ERGONOMIC DESIGN - The headphones are designed to fit firmly even when you are out for adventure or sports activities. These are designed to keep away the sweat and stay odor free even during rigorous workouts. The headphones are provided with easy to access buttons that allow you to perform basic operations like call receiving, playing/pausing music and controlling volume.