Features: Equipped with graphene diaphragm, stereo surround sound, more shocking bass. 14.3mm moving coil unit has high-intensity analysis capability, can enrich sound details, bringing comfortable listening experience. Ergonomic semi-in-ear design, fit the ear canal, stable and comfortable to wear. Physical noise reduction, effectively reduce ambient noise, clear calls. Adopt oxygen-free copper TPE wire, more stable and smooth signal transmission, long service life, not easy to break. Humanized wire control design, built-in high-definition microphone, you can freely play/pause, answer/hang up/reject the call, switch to next/previous song, convenient to use. Specification: Brand: Lenovo Model: XF06 Color: Black/White( optional ) Type: Semi-in-ear headphone Interface type: 3.5mm Microphone sensitivity: 42dB±3dB Speaker sensitivity: 115dB±3dB Speaker diameter: 14.2mm Cable material: TPE Cable length: 1.2M Packing list: 1 * Headphone