Tech specs for Lenovo's Black In-Ear USB-C Headphone Wired Stereo Mini-Phone with 9mm Speaker Divers & Enterprise-Grade Mic Black in color Type/Length of Cable: 1.2 m; Weight: 12 g Type of Warranty: CRUControls Play and Pause Distortion1K is below 3%. Frequency Range: 100–20 KHz; Driver Φ9 mm 32 Ohm Impedance 5m of power is needed. WRMS Power5m WSensitivity: 110 dBA Audio Input 5m Lenovo OS WBrand Requirements Independent of OS 50g of packed weight Other Electronic