Features: brand new and high quality Driver-free quick pairing: driver-free, installation-free, just plug in and connect, convenient and fast. Instant voice: Bluetooth-compatible headset is wirelessly connected to laptop/PC, online video/voice, turn on in one second. Clear sound quality without noise: support lossless source transmission, clear sound pickup in noisy environment, restoretrue sound quality. Support a variety of software: The product supports multiple online video/voice software, such as: WeChat, Tencent Meeting, DingTalk, Skype, Zooms, .Teams and other social software. for multi-version systems: support Windows7, Windowsa8, Windows10, Android, for Mac and other systems. Specifications: Bluetooth-compatible version: v5.0/5.2 Color: black Transmission distance: 20 meters Rated voltage: for DC 5V Transmission method: USB data transmission Product size: approx. 41.3x18.1x9.1mm/1.63x0.71x0.36in Support system: Win7Win8Winl0/Android/for Mac and other systems Package Includes: 1 x Audio USB Dongle note: 1. There may be small deviations in size due to manual measurement, different measurement methods and tools. 2. The for image may not reflect the actual color of the item due to different shooting lights, angle and display monitor.