Specification: ? Model: KZ EDX Pro ? Headphone type: In-ear headphones ? Headphone output source: HiFi ? Sensitivity: 112dB ? Cell Impedance: 24O ? Frequency response range: 10-20kHz ? Pin Type: 0.75mm ? Plug diameter: 3.5mm ? Plug type: L curved ? Line length: 125 ± 5 cm ? Wired or wireless headset: wired headset ? with or without Microphone: Optional ? Voice principle: 1 Dynamic Driver Package included: ? 1* KZ EDX Pro Earphone Please Note: ? Yinyoo have the Formal authorization from KZ company ,?all products are original.