Description: This ANT+USB stick receives activity data if the compatible fitness device is within range.It is suitable for cycling games, must-have for cycling enthusiasts! brand new and high quality Features: ANT+wireless communications protocol;up to 8 channels. Receive ANT+wireless radio and translate it into USB protocol for computer software. Plug into the USB port of a computer and search for the cycling software,easy to use. Suitable for Zwift,for Wahoo, for Bkool. Mini size and light weight,very convenient to carry. ANT USB Stick Adapter only,other accessories demo in the picture is not included. Specification: Transmission Range: 5 meters (best performance within 3 meters) Material: Plastic Size: app.1.9x1.5cm/0.75x0.59in Color: Black Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x ANT USB Stick Adapter