Compatible with HUAWEI Mate 30, HUAWEI Mate 20, P30, P20 and Mate 10 Series. Features: [USB Type-C, Plug&Play] Seamless&reversible USB Type-C plug with built-in decoder IC. [Hi-Res™ Audio, Hear Everything] High-Resolution™ authenticated digital audio output HUAWEI Histen™ 3D audio technology delivers immersive CD quality sound. [Classic Design] Classic ergonomic half in-ear design, fit&comfortable; simple&stylish design to meet different scenarios in everyday life. [3-Button Remote Control, Enhanced Wind Noise Reduction] Ergonomic 3-button remote control to free your hands; enhanced wind noise reduction design for crystal clear voice. Specifications: Brand: HUAWEI Model: CM33 Color: White/Black(Optional) Material: ABS Connector: USB Type-C Package Size: 14.85*7.4*2.6cm / 5.84*2.91*1.02in Package Weight: 40g / 1.41oz Note: Requires HUAWEI Histen™ 3D audio enabled source device, e.g., Honor 9 and Mate 10 series. The function of calls is only compatible with HUAWEI Mate 10 series & other selected USB Type-C smartphones. Package List: 1 * Earphones