I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Please feel free to contact us if you have any questions.Specifications:USB Bluetooth adapter, plug and play, easy to use.2 in 1 design, can receive and transmit signal to devices.Can connect speaker, Bluetooth headphone, game controller, speaker, etc..Type: Bluetooth AdapterMaterial: Plastic + MetalBluetooth Version: 4.0 Transmission Frequency: 2.4GHz Transmission Rate: 3Mbps Barrier-Free Transmission Distance: 20m Protocol: HFP1.5/HSP1.2/AVRCP14/A2DP1.2/FTP Features: 2 in 1, Mini, Easy to Use, Bluetooth Receiver/Transmitter Size: 33mm x 16.2mm x 7.5mm/1.30" x 0.64" x 0.30" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bluetooth Adapter a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a