KZ Castor IEM in Ear Monitor Headphones 2DD Tuning Adjustable Dual-Driver Supper Bass Wired Headphones, Harman Target with Improved Bass Version Monitor Headphones (Black(Improved bass), No Mic)

KZ Castor tuning adjustable dual-Driver in ear monitor headphones. High Technology wired iem earphones monitor 1.consturected in high build quality and HiFi clear sound,with more air and separation between instruments. 2.A good companion for workout,gym,cycling,game,show and etc. 3.Comfortable and snug Fit,perfect for workout. 4.Excellent Noise Reduction Product information Product name: KZ Castor Tunable in ear Headphones Frequency response range: 20-40000Hz Impedance of Harman Curve Version n: 31-35? Impedance of Harman Curve Extra Bass Version: 16-20? Sensitivity of Harman Curve Version: 105±3dB Sensitivity of Harman Curve Extra Bass Version: 103 ± 3dB Jack type: 3.5mm Pin type: 0.75mm Wire: Detachable double and transparent black wire Wire length: 120 ±5CM Product list 1. Headphones (Harman Curve/Harman Curve extra bass version) B. Eartips *3 pairs 3. Double parallel wire 4. Tuning lever 5. Instructions