Specification: _x005f_x000D_ Model: RTL812 _x005f_x000D_ Bluetooth-compatible: 5.3 _x005f_x000D_ Color: White, Black (optional) _x005f_x000D_ Transmission distance: 20m (in an accessible environment) _x005f_x000D_ Transmission rate: 3Mbps _x005f_x000D_ Chip: RTL8761BW _x005f_x000D_ Supported protocols: A2DP/HSP/AVRCP/HID and other protocols _x005f_x000D_ Product size: about 22 * 15 * 7mm/0.86 * 0.59 * 0.27inch _x005f_x000D_ Packaging size: about 110 * 90 * 12mm/4.33 * 3.54 * 0.47inch _x005f_x000D_ Gross weight: 25g _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x USB adapter _x005f_x000D_ 1 x Drive disc _x005f_x000D_ 1 x Instruction manual 1. Bluetooth-compatible 5.3 Technology: Equipped with a Taiwan Realtek RTL8761BW chip, this USB adapter is fully compliant with Bluetooth-compatible 5.3 technology and supports dual-mode low-power transmission for superior performance. The USB2.0 interface is universally compatible, and its ultra-miniature size makes it highly portable. 2. Longer Range and Faster Speed: With a range of up to 10-20m (unobstructed), the adapter provides a strong signal and reliable connections. The transmission speed of 3Mbps enables high-speed file transfers and audio data exchange. 3. Original Driver Management Software: The REALTEK driver management software is easy to use and offers powerful functions, making it suitable for various application programs. 4. Low Latency and Interference Resistance: This adapter offers ultra-low latency, intelligent sleep/wake modes, and 24-bit CRC verification to resist interference and reduce crosstalk. It is fully backward compatible with Bluetooth-compatible 2.0, 2.1, 3.0, 4.0, 5.0, and 5.1 specifications.