Specification: Specially designed reflector protects the vision of on comers. A good partner for safe riding at night, suitable for mountain bike cyclist. Super bright light, very convenient to use. Type: Bike Front Light Material: Aluminum Alloy, PC, ABS Case Color: Black Bulb Type: LED Charging Time: 3 Hours by USB Luminance: 300 Lumens (Super Bright) Mounting Placement: Handlebar Fit for: 20mm - 40mm Handlebars 3 Modes: High Bright, Medium Bright, Flash Running Time: 3 Hours in High Mode, 5 Hours in Medium Mode, 12 Hours in Flash Mode Power Source: USB Rechargeable 800mAh Li-Polymer Battery (Included) Size (L x W x H): 6.5cm x 2.8cm x 2.5cm/2.56" x 1.10" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bike Front Light 1 x USB Cable