Features: 1. Classic style bicycle speedometer with pure mechanical operation. 2. Easy to install; compatible with left or right mounting. Resettable function included. 3. Universal fit for 26, 28, 29, and 27.5 inch bicycles. 4. Provides accurate speed, distance, and riding time measurements. Constructed from ABS material for lightweight durability. 5. Measures speed, distance, and ride duration effectively. Notice: - Actual color may vary slightly due to differences in monitor displays and lighting conditions. - Slight measurement deviations may occur due to manual measurement. Specification: - Type: Bike Speedometer - Material: ABS - Color: Black - Features: Mechanical design, accurate data display, left or right mountable, resettable, speed in RPM - Compatible with: 26, 28, 29, 27.5 inch bicycles - Bayonet size: Approximately 2cm Package includes: 1 set x Bike Speedometer Kit