The frame body is made of carbon fiber material, which has the characteristics of light weight and high strength.Multi-accessory design allows it to support different types of code tables, which can be expanded for other purposes.Suitable for CATEYE, for Bryton and for Garmin stopwatch.It is easy to install, you can use an hex key (not included in this product) to easily install it in one minute.It can be used for GoPro camera adapter and flashlight adapter.Item Name: Bicycle Handlebar Stopwatch HolderMaterial: Carbon Fiber Bracket, Plastic AdapterFeatures: Lightweight, High Strength, Easy to InstallSize: 15.7cm x 3.8cm x 1cm/6.18" x 1.49" x 0.39" (Approx.)Notes:Due to the light and screen setting difference, the itemand 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Stopwatch Holder Frame1 x Adapter(for CATEYE Stopwatch)1 x Adapter(for Bryton Stopwatch)1 x Adapter(for Garmin Stopwatch)2 x Hex Socket Screws(M5 x 16mm)2 x Screw Washers Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin