Support APP: No Is wireless: No Support -x: No Active Noise-Cancellation: Yes Support Memory Card: No Wireless Type: None Volume Control: No Waterproof: No Communication: Wired Vocalism Principle: Dynamic Function: Common Headphone With Microphone: Yes Control Button: Yes Resistance: 32 ohm Style: In-Ear Model Number: Air Tube Earphone Headset Plug Type: Line Type and . Provide sound for both calling and music. suitable for nearly all smartphones. Built-in microphone, with answer and hang up button. Soft tube design, advanced silicone earplugs. Can enormously reduce radiation when making the phone call. CTIA/OMTP mode switch, compatible with nearly all smartphone: for , for , for , for and so on. Specifications: Type: Stereo air tube radiation-proof earphone. Sensitivity: 102db S.P.LAT 1KHZ. Speaker frequency response: 20Hz - 20,000H Rated power: 100mw. colour: white Material: metal size: Length: 1.2m Plug: 3.5mm Speaker Spec: 10mm Package Contents: 1 x Covert Acoustic Tube Earpiece for Cellphone 2 x Extra Ear-bud