Specification: 1.Brand and model:NICEHCK NX7 MK4 2.Product type: In ear 3.Shell Material: PC 4.Impedance: 39Ω 5.Frequency: 20-28000Hz 6.Cable length: 1.2m±3cm 7.Connector: 0.78mm 2Pin 8.Face Panel: Stabilized Wood 9.Filter color:Gold/Red/Black replaceable 10.Cable material:OCC and Silver Plated Mixed 11.Plug type:3.5mm/4.4mm balanced Optional 12.Sensitivity:Gold Filter 112dB/mW, Red Filter 113dB/mW, Black Filter 110dB/mW 13.Sound Style of Filters：Gold Balanced, Red Mid High Frequency, Black Heavy Bass 14.Driver unit:4BA+10mm Beryllium Plated Composite Dual Dynamic+Seven Layers PZT Driver, Hybrid 7 Units Compared with NX7 MK3, NX7 MK4 upgrades the following aspects: ①Easier to Drive ②FP with 3 Materials Mixed ③OCC and Silver Plated Mixed ④Higher Level Sound Quality Usage tips: 1.Please use professional HIFI player to drive it, so that NX7 MK4 can fully exploit its potential. 2.Please burn it at least 100 hours, the sound quality will be more amazing.

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