QKZ AK4 Metal Stereo Dual Dynamic Drivers Wired Earphone Super Bass In-ear Earbuds With Mic for Mobile Phone MP3 MP4

Features:
-Qulity optimization of exclusive patent, metal composite vibrating membrance.
-The ergonomic design, nipple grade silicone ear protection.
-Ear and tail tube connection with angled angle design, comfortable and easy to carry.
-It has high sound quality, enjoy your life.

Specifications:
Type: piston in-ear headphones
Material: PC
Surface treatment: electroplating process
Weight: 15 ± 3 (g)
Speakers: 2x6.8 (Φmm) + 2 x4.8 (Φmm) + 2x 5 (Φmm)
Speaker Power: Rated power: 3mW, maximum input power: 5mW
Impedance: 16Ω ± 15%
Speaker sensitivity: 106 ± 3dB (CRY 1Khz 0.126V)
speaker frequency response: 10-30000Hz
Microphone sensitivity: -42dB ± 3dB1kHz, 3V 0dB = 1V / pa
Operating temperature: -10 Celsius --- + 40 Celsius
Function: Play / Pause, Answer / Off, Noise Canceling, Microphone
Package weight: Approx. 20g / 1.1oz

Package:
1xheadset