Feature: 1. [Stereo Sound] Using BT 5.1 adapter, the computer can be connected to BBT speaker, headphones, headset microphone devices, enjoy CD stereo sound quality. 2. [High Speed And Wide Range] BT adapter with EDR data transmission rate, up to 3Mbps, Class1 power standard, effective distance up to 10‑100m/32.8‑328ft. 3. [High Gain] BT 5.1 receiver transmitter comes with 2dBi high gain antenna to ensure more powerful signal transmission and longer effective distance. 4. [Compatible System] This BT sound adapter is compatible with for Windows 7 8 8.1 10 and other operating systems, making the product more widely used. 5. [Stable Without Lag] BT dongle can upgrade traditional sound and video equipment, so you can listen to songs and play games stable without lag. Specification: Item Type: BT Adapter Material: ABS Model: EP B3536 BBT Version: V5.1 Chip: RTL8761B First Class Power Standard: Approx. 50-100m/164-328ft Distance Transmission Rate: 3Mbps Antenna Gain: 2dBi Support System: for Windows 7 8 8.1 10 . Package List: 1 x BT Adapter1 x Antenna1 x Manual