Cool Wireless Bluetooth 4.0 Adjustable Throat Vibrate Mic Microphone, Anti-noise Tactical Neckband Vocal Military Headset/Headphones for Cellphone and Gaming Magic Throat Mic: Transmit sound by your throat vibration rather than microphone, only transmit your voice and will not pick up ambient sound Noise Cancellation: Telescopic design and built-in noise cancellation compression sponge ensure clear communication even in extremely noisy environment Comfortable to Wear: Made by high-sensitivity transparent flexible air duct and silicone earmuffs. You can also adjust the neck piece for more comfortable wear Premium Quality: Made by military parameters. Your voice can be perfectly transmitted if you wear it rightly. If caller cant hear you clearly, please try to adjust the position of the throat mic Universal Compatibility: Compatible with all 3.5mm jack enabled devices, such as smart phone, laptop, cell phone, computer, Android, iphone, gaming PS5. (iPhone 4s / 5 / 5c / 5s / 6 / 6 Plus, ipad / mini / air 2 / 4, ipod nano / 5 / touch, Samsung galaxy S4 / S5, Note 2 / 3 / 4, M3, HTC, Motorola, Blackberry, etc. )