please noted: it can'for t work in car stereo or TV !!! it can only use for computer. The Bluetooth-compatible 5.0 version do not support for Mac OS Linux system. 1.Mini USB Bluetooth-compatible 5.0 adapter with high speed up to 3Mbps. 2.Bluetooth-compatible low energy Wireless USB Dongle. 3. Dual-mode Bluetooth-compatible transfer. 4.Low-power selectable 1.2 to 3.6 VI/O. 5.Supporting Bluetooth-compatible voice data. 6.Supporting multiple languages. 7.for Bluetooth-compatible v1.2/2.0/2.1/3.0/4.0/5.0 Item Name: Bluetooth-compatible Adapter Chip: RTL8761B Frequency Range: 2.400-2.480GHz Transfer Rate: 3Mbps Distance: 0-20M Operation System: Windows7/ 8/ 10/ / 2000/ 98/ Me etc. Not support : for windows xp/ vista , linux , for mac os Item Size: 21x16x5 mm Warranty: 2 Years Item Name: Bluetooth-compatible Adapter Interface: USB 2.0 Bluetooth-compatible Version: Bluetooth-compatible V5.0+EDR Frequency Band: 2.400-2.480GHz Color: Black/blue Item Size: 21x16x5 mm 1 x Mini Bluetooth-compatible Adapter 1 x C D Driver