Specification: Brand: KZ Model: KZ ZSN PRO X Sound production principle: Hybrid Technology (1DD+1BA) Wearing method: In ear style Color: Black, Gold (optional) Line control function: without mic or with mic (optional) Chamber material: metal+plastic Frequency response range: 7-40000 Hz Impedance: 25 Sensitivity: 112dB Plug type: 3.5mm Pin type: 0.75mm Line length: 120cm 3cm Connection type: wired Support for wire replacement: Yes Packaging size: about 102 * 72 * 32mm/4.01 * 2.83 * 1.25inch Gross weight: 80g 5g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 Pair x Headphones 6 Pair x Headphone sleeves 1 x 3.5mm jack cable