Tanchjim is a Chinese company that specializes in iems. I would like to thank Tanchjim and Penon Audio for the review unit of Oxygen. At the moment, you can purchase the Tanchjim Oxygen on Penon Audio.



  • Driver Configuration: 10mm Dynamic with Carbon Nanotube Diaphragm
  • Impedance: 32Ω
  • Sensitivity: 110dB/mw
  • Frequency Response: 10Hz – 40kHz

Unboxing & Accessories

The Oxygen comes in a grey box with the brand logo and brand name in white color on the front. After opening the box, there are the Oxygen, 2 cables, brand badge, carrying case, tips, warranty card, certification card and instruction manual.

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