Brand Name:Sokuci; Style:Headphone; Vocalism Principle:Dynamic; Origin:Mainland China; Active Noise-Cancellation:Yes; Control Button:Yes; Communication:Wireless; Volume Control:Yes; Certification:CE; Number Of Drivers:2; Impedance Range:up to 32 ; Support Memory Card:No; Waterproof:No; Wireless Type:bluetooth; Package List:User Manual,Charging Cable; Codecs:AAC; Is wireless:Yes; Bluetooth Version:5.1; Charging Method:Cable; Support APP:No; Function:Common Headphone,For Mobile Phone,HiFi Headphone,Sport; With Microphone:Yes; Sensitivity:108dB; Line Length:Nonem; Number Of Drivers:2; Model Number:Bluetooth sleep eye mask; Frequency Response Range:2.4026GHz-2.480GHz; Color:Black Pink Grey; Bluetooth protocol:5.2; Transmission range:20M; Channel:3D Stereo eye mask; Whether single or both ears:Bilateral stereo; Occasions for gifts:Opening Ceremony, Employee Benefits, Anniversary Celebrations, Trade F; Features:Battery display, voice control, call function, music support, multi-po; Way of use:Head-mounted; Bluetooth sleep eye mask:Yes; The headset patch:Yes; Connection method::Blutooth; Compatible:For iOS, Android, Mac and Windows;