The Meteor Auto X Pro delivers a maximum output of 600 Lumens, with an excellent run time of two hours at this maximum output. Key Features: Light sensitive auto ON/OFF- To help you to conserve battery power when the light is not needed Waterproof to IPX 4 Light Memory Mode - Stay on the same mode even when you turn the light off Lumen and Run Time are tested under ANSI FL-1 Standard Daylight Flash Mode - Making a cyclist more visible during the daytime Low battery, charging and fully charged indicator Max lumens: 700