Precise timekeeping, glow in the dark, it can help you see the time clearly even at night. With a non-slip rubber mat and a split ring mount for easy installation on the straight handlebar section. Fix to the straight handlebar section with a stainless steel screw. Made of aluminum alloy material with electroplating surface, corrosion-resistant and shiny. The dial is waterproof and shockproof, very durable. Features: 1. Precise timekeeping, glow in the dark, it can help you see the time clearly even at night. 2. Featuring a non-slip rubber mat and split ring mount for easy installation on straight handlebars. 3. Attach to the straight handlebar section with a stainless steel screw. 4. Made of aluminum alloy material with electroplating finish, anti-corrosion and bright. 5. The dial is waterproof and shockproof, very durable. Specifications: Material: Aluminum Alloy + Electroplating surface Optional Color: White/Black Watch Size(Dia x H): 4.2 x 2 cm/1.65 x 0.79 Fixture: For 7/8 1 handlebar (22mm, 25mm ) Package List: 1 x Watch (Built-in Battery) 1 x Anti-Skip Rubber Mat 1 x Allen Wrench Note: 1. Please allow 0~1 inch error due to manual measurement. Thank you for your understanding. 2. Please check and confirm the size before purchasing. Thank you