Price reduced. Thank you. Purchased last year, this is the latest serial number version with the Special Gold Module included. I collect earphones as a hobby, so the usage time is only about 1 hour, making it almost new. The 4.4 premium cable is unused. I am selling it to change my camera equipment. Thank you. Driver Configuration: 10 driver configuration Low ×2 (Dynamic), Mid ×6, High/Mid ×1, tia High ×1 Impedance: 6.3Ω @1kHz Sensitivity: 103dB/mW @1kHz @1mW(94mV) Frequency Response: 5Hz – 22kHz Cable Specifications: No manufacturer information Weight: No manufacturer information Accessories: □ 64 Audio Premium Leather Case □ Premium Cable 4.4mm □ Ear tips (silicone, Spinfit, TrueFidelity) □ m20 Apex Module □ m15 Apex Module □ mX Apex Module □ mGOLD Apex Module