• Panorama surround, lossless noise reduction

• Oxygen free copper material, stable transmission, strong and durable

• Silicone earmuff, comfortable to wear
  

• Clear sound, smooth cavity

• HD voice, comfortable ear wearing, multiple noise

Specification: 

• Model: D21

• Earphone type: in-ear earphone

• Way to wear: earplugs

• Headphone output audio source: universal

• Plug diameter: 3.5mm

• Plug type: straight plug type

• Wireless earphone or not: wired earphone

• Purpose: general purpose, ordinary earphone, noise-cancelling earphone, sports earphone, voice earphone, customized computer earphone,MP3 earphone, mobile earphone, music earphone, hifi earphone

Compatible with:

• Laptop/PC/iPad/Mobile Phone