Specification: It is fully compliant with Bluetooth-compatible 2.0 compatible, Bluetooth-compatible 2.1 compatible, Bluetooth-compatible 3.0 compatible, Bluetooth-compatible 4.0 compatible and Bluetooth-compatible 4.2 compatible specifications. Compliant with Bluetooth-compatible, compatible with 5.0 technical specifications, dual-mode transmiion. The farthest transmiion distance: 100 meters long transmiion distance (non-blocking), strong signal. 24mbps baud rate, providing stable and high-speed file and audio data transmiion. Power-saving smart wake-up sleep, 24-bit crc check anti-interference, adaptive frequency hopping to reduce crotalk. Product name: Bluetooth-compatible adapter Material: Plastic + Metal Bluetooth-compatible version: 5.0 Interface: USB 2.0 Compatible system: for windows xp win7 win8 win8.1 win10 Features: Mini, plug and play, high speed, easy to use and carry Dimensions: 13mm x 14mm x 6mm/0.51" x 0.55" x 0.24" (approximately) Package includes: 1*Bluetooth-compatible receiver Note: Not applicable to all For ios devices including For mac ipad iphone, and cannot work on car audio or TV or For linux! ! ! Due to differences in lighting and screen settings, the color of the item may be slightly different from the image. Due to different manual measurements, please allow a slight size difference.