●Compatible cycle computer: Cateye wireless model *Excludes CC-TR310W ●Mounting pipe diameter: 0.9 inches (22.2 mm) / 1.0 inches (25.4 mm) *Size adjustment is done in color ●Clamp-on Installation ●A 0.1 inch (3 mm) allen key is required for installation purposes separately ●CC-TR310TW cannot be installed ●The color of the product may look different from the actual product depending on your display settings ●Please note that product specifications, logos, and other designs are subject to change due to improvements