The Lezyne Zecto 2 Drive Max 400+ is the high-output rear light in the Zecto 2 range. It gives up to 400 lumens in Day Flash and, with a 1300mAh battery, up to 100 hours in Femto mode. Wide Angle Optics give up to 270° of visibility, and quarter-turn seatpost adapters plus an O-ring mount cover most bikes. Key Features 400 lumens maximum, up to 100 hours runtime Daytime Flash mode Wide Angle Optics give up to 270° of visibility Compatible with most quarter-turn mounting systems Integrated clip IPX7 waterproof rating USB-C charging through a water-resistant port 1300mAh user-replaceable battery (EU Batteries Regulation 2023/1542) Compatibility Round, D-shape and aero seatposts Most quarter-turn mounting systems Integrated clip for bags and clothing Included Zecto 2 Drive Max 400+ rear light D-shape quarter-turn seatpost adapter Round quarter-turn seatpost adapter O-ring mount Not Included USB-C charging cable Specification Specification Detail Position Rear Maximum output 400 lumens Maximum runtime 100 hours Output modes 6 Battery 1300mAh, user-replaceable Charging USB-C (water-resistant port) Water resistance IPX7 Mounting Quarter-turn seatpost adapters (D-shape and round), O-ring, integrated clip Weight 59.8g Dimensions (L x W x H) 46 x 33.1 x 47.2mm Colour Black Output Modes Mode Output (lumens) Runtime (h:mm) Blast 80 4:30 Economy 15 20:00 Femto 5 100:00 Day Flash 400 36:00 Flash 150 90:00 Pulse 80 12:00 Serious rear output with runtime to match.