Lightweight Sy-g30 Universal Stereo Headset High-performance Noise Cancelling Ergonomic Design 3.5MM Wired Head-mounted Headphones Blue orange

--Stereo headset with head-mounted design. The noise reduction microphone

--keep your ears in good condition even during long calls. You can immediately adjust the volume and mute the microphone.

--38db high-performance vocal capacitor omnidirectional microphone provides high-quality dialogue

--ergonomic design: soft PU ear cushions and lightweight headband, comfortable to wear

--plug the headset into the computer's 3.5 mm input and output jacks

--Microphone: 4.0 x 1.5mm

Description:
Name: 3.5MM earphone
Wire length: 1.8m;
Wire material: PVC wire;
Speaker material: 40 cm black magnetic speaker;
Impedance: 32±15% (Ω);
Sensitivity: 110±3 (dB);
Sounding principle: moving coil;
Frequency response range: 20-20k (Hz);
Microphone: 4.0 x 1.5mm;
Microphone sensitivity -38±3dB;
Microphone impedance: 2.2KΩ;
Directionality: omnidirectional;
Incoming interface: 3.5mm interface;
Packing list:
1 x Manual
1 x 3.5MM earphone
1 x Packing bag
Note:
Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 
Manual measuring,please allow 1~3mm error,thank you.