Support APP: No Is wireless: No Support -x: No 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 Number: Tube Earphone Headset Plug Type: Line Type and high quality. high quality sound for both calling and music. suitable for nearly all smartphones. -in microphone, with answer and up button. Soft clear tube design, advanced silicone earplugs. Can enormously reduce radiation when making the phone call. CTIA/OMTP mode switch, with nearly all smartphone: for , for , for , for and so on. Specifications: Type: Stereo tube radiation-proof earphone. Sensitivity: 102db S.P.LAT 1KHZ. Speaker frequency response: 20Hz - 20,000H Rated : 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 Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.