900 Candelas Brightness Headlight Luminous Flux: 90Lumens, Luminous Intensity: 900cd, Illumination: 8.5Lux/10M, 2 0.5W White LED, 3 Modes High Beam: 18 hours, Low Beam: 30 hours, Flashing: 45 hours, Toolless Handlebar Bracket Included (YLP06200) Mounting Diameter : φ19 - 1.3 inches (32 mm), 2 AA batteries for monitors; Size: L3.5 x W1.5 x H0.9 inches (89.4 x 37.9 x 23.9 mm); Weight: 1.0 oz (26.6 g) (excluding batteries and bracket); *Product color may differ from the actual product depending on your display type. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Thank you for your understanding.