Features: Easily attach it to the handlebar to record your riding experience in a way. Compatible for , very good bike accessories. Reducing wind drag, improve visual field, safety. Bike Stopwatch Holder only, other accessories demo in the picture is not included! Description:For : Supports EDGE Series Bike Computers (Edge20 25 200 500 510 520 800 810 820 1000 1030), and Series Bike Computers (iGS10 20 20plus 50E 60 618) For : Supports Rider Series Bike Computers (Rider10 310 330 530 410) For CATEYE: Supports CATEYE's full line of bicycle computers. Trigo: Cameras that support the camera holder and the same interface. Light Holder: Supports bicycle lights that do not exceed 25mm in diameter. Weight: about 34g Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Material: Aluminum ABS colour: Black Package Contents: 1 * computer mount bracket kit 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.