Wirele USB Adapter Plug and Play Bluetooth-compatible 5.3 Mini Adapter Dongle Support for Win8.1/10/11 for PC Keyboard Wirele MouseFeature:1. Bluetooth-compatible 5.3:Upgrade Bluetooth-compatible 5.3+BLE (LMP: 12.5X), compatible with Bluetooth-compatible versions such as 5.2/5.1/5.0/4.0/3.0/2.0. Wide compatibility (Bluetooth-compatible earphones/speakers/Bluetooth-compatible mouse/keyboards/Bluetooth-compatible handles/printers/Android phones).2. Mini size:The adapter has ultra mini size, convenient to carry, low power consumption, low latency, and high-definition audio quality.3. Built-in Antenna:The adapter has a built-in ceramic antenna for more stable distance.4. Plug and Play:Driver free, plug and play, supporting Win8.1/10/11. Once connected, automatically reconnected. Supports simultaneous connection of multiple devices.5. Satisfaction Guarantee:We strive to provide each customer with the highest standard of customer service to ensure you have a pleasant shopping experience. If you have any iues, inquiries or need aistance, please feel free to contact us directly.Specification:Model: BT612Color: White, Black (optional)Transmiion distance: 10-20mTransmiion rate: 3MbpsChip: ATS2851Supported protocols: A2DP/HSP/AVRCP/HID and other protocolsProduct size: about 22 * 15 * 7mm/0.86 * 0.59 * 0.27inchPackaging size: about 110 * 90 * 12mm/4.33 * 3.54 * 0.47inchGro weight: 20g Note: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!Please allow 1-2cm measuring deviation due to manual measurement. 1 x Adapter1 x Instruction manual