Fangrui Product Details 1. High Gain Antenna Signals Are Freely Connected At Full Capacity 2.100 Meter Barrier Free And Stable Transmission Of Partition Wall Signals For Easy Reception 3.high Performance Bluetooth 5.3 Chip Bid Farewell To Delay/lag 4.can Be Used For Multiple Bluetooth Devices, Supporting 5 Devices To Connect And Use Simultaneously, Saving Usb Interface Space, And Meeting User Needs 5.flexible Rotation Angle Of Antenna Can Be Adjusted According To The Heart Bluetooth Version: 5.3 Transmission Distance: 100 Meters (accessible) Supporting Protocols: A2dp//avrcp/hid/pan/gavdp//iopt Due To Different Batches, There May Be Differences In Product Appearance And Printed Text, Which Not Affect Use Colour:black Material:plastic Package Contents: 1 X Usb Bluetooth 5.3 Adapter Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.