Specifications: It adopts Bluetooth 5.0 technology, featuring strong compatibility and more stable transmission. 2-in-1 design allows use as a Bluetooth receiver or transmitter. The adapter is plug and play and does not require external power. Compatible with TVs, computers, headsets, mice, and keyboards. Item Name: Bluetooth Adapter Material: ABS Bluetooth Version: 5.0 + EDR Transmission Distance: 10m (barrier free) Features: 2-in-1, plug and play, wireless transmission Adapter Size: 3.3cm x 1.8cm x 1cm / 1.30" x 0.71" x 0.39" (approx.) o Cable Length: 57.5cm / 22.64" (approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Slight dimensional differences may occur due to manual measurement. Package Includes: 1 x Bluetooth Adapter 1 x o Cable 1 x User Manual