It transmits sound by your throat vibration rather than microphone. Effectively avoid environmental noise and make the call clearer.With the best-quality transparent acoustic tube that could hardly be detected by people around you, this is also Perfect for surveillance purposes and security at airports, casinos, crowd control at conventions and concerts, and other working environment requiring discreet communications.This is exceptionally Perfect for usage in high ambient environment such as driving, riding motorcycles and bicycles.Compatible with all 35mm jack enabled devices, such as cell phone, smart phone, laptop, computer, gaming. (for 4s / 5 / 5c / 5s / 6 / 6 Plus, for / mini / 2 / 4, for Galaxy S4 / S5, Note 2 / 3 / 4, M3,for , for , for Blackberry, etc. )Excellent for use in police, military, nightclubs, bars, , security, restaurants, hotels, bouncer, warehouses, and noisy environments.Function: for Video Game,Monitor HeadphoneSupport APP: NoIs wireless: NoSupport Apt-x: NoVolume Control: YesStyle: HeadphoneActive Noise-Cancellation: YesSupport Memory Card: NoSensitivity: 100+/-2dBWireless Type: NoneWaterproof: NoFrequency Response Range: 20-20HzCommunication: WiredVocalism Principle: DynamicWith Microphone: YesControl Button: Yes: 32 ohmPlug Type: Line TypeSpecifications: Net Weight: about 22oz / 62gCompatible: All 35mm jack enabled devicesColor: BlackMaterial: ABSsize: Connectors: 35mmPackage Contents: 1 x Throat Mic earphone Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.