Frequency range: 20-20000Hz
Cable: 4 core black Silver Plated Copper (SPC)
Driver diameter: 14.8mm
Plug: 2.5mm Gold-plated Balanced
Onyx is a PK-shelled earbuds made by Just on Earbuds, a startup company in the Philippines. The name was derived from the mineral "Onyx" which sports the same black colorway.