Semi in-ear headphones Number of speakers: 2 Speaker Frequency range: 20-40kHz Speaker sensitivity (SPL@1kHz): 106dB+1.5/-3.5 Sampling rate/Resolution: 96kHz, 24bit Wind Noise: ?15dB(3m/s) Number of microphones: 1 Earphone plug: USB C Total cable length: 1100 +/- 50mm Wired control: Three-button control Temperature: Operating -10°C to +55°C, Storage -40°C to +70°C Seamless & reversible USB Type-C, plug & play Hi-Res™ authenticated audio, lossless music Classic design, simple & stylish 3-button remote control, wind noise reduction HUAWEI brand, trustworthy quality High-Resolution™ authenticated digital audio output + HUAWEI Histen™ 3D audio technology delivers immersive CD quality sound * Requires HUAWEI Histen™ 3D audio enabled source device, e.g. HUAWEI Mate 10