All copper series cartridges have Namiki boron cantilever with Micro Ridge stylus and pure Copper coil.
Specifications:
Body: Durawood
Cantilever: Namiki / Adamant boron
Stylus: MicroRidge
Output: 0.3mV
Magnet system: AlNiCo5
Tracking force: 1.9g.
Compliance lateral: 12 um/mN
Cartridge weight: 9.5g.
Recommended loading: 100 – 1,000 ohms
Coils: copper 0.03mm
Mount: thread M2.5x0.45, 1/2 inch / 12.7mm standard between the holes
Coil impedance DC: 5 ohms
Recommended tonearm mass: Medium.