Support APP: No Function: Noise Cancelling Frequency Response Range: 20-20000Hz Is wireless: No Support -x: No Active Noise-Cancellation: Yes Support Memory Card: No Wireless Type: None Volume Control: No Waterproof: No Communication: Wired Style: Neckband Vocalism Principle: Dynamic Sensitivity: 93+/-3dB With Microphone: Yes Control Button: Yes Model Number: Adjustable Covert Air Tube Headset with Throat Mic Resistance: 32 ohm Plug Type: Line Type Item: Air Tube Headset Feature: with low voice microphone throat vibration microphone - can low voice Clear communication in even most noisy environment Transparent flexible acoustic tube Soft plastic earbud fits snugly to ear Sweat resistant in-ear part Press the button lightly in to stop talking Weight: 2.2oz / 62g Color: Black Material: ABS size: standard plug: 3.5mm Line Length: 1. Note: This throat Mic with 3.5mm standard plug, available for most mobile phone, Speakers, Computers, and more. Package Contents: 1 x Throat Mic Adjustable Concealed Intubation Cannula Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.