Waterproof Silicone Bike Speedometer Protective Case with Sensor Light Bicycle Computer Cover Outdoor Cycling Accessories Feature: 1. Intelligent photosensitive design: automatic light induction in dark. 2. Easy to install. 3. The integrated design of code watch protection cover and car lights to save space and reduce weight. Specification: Name: Code Watch Protector Material: Silicone Color: Black Size: About 95x50x45mm/3.74x1.97x1.77in Net Weight: About 43g Applicable To: g/g+ Light Gear: Constant Light - Fast Flashing - Slow Flashing Power Supply: 1xCR2032 Button Cell Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. 

1 X Speedometer Case Protector