Introducing the SUPERFIRE GT-R1 Bicycle Headlights: Powered by the JINGRUI XG2 source, it offers 500lm theoretical brightness and 200lm practical brightness. Crafted from lightweight aluminum, weighing 107g, with dimensions of 97*39*26mm. Equipped with a built-in 18650 battery (1800mAh), it ensures a 3.5-7 hour runtime, with a 5-hour charging time. Features three modes (High, Low, Strobe) for varied riding conditions. The professional cut-off line design enhances safety by eliminating glare. It includes direct charging design for convenience. Ride safely with the GT-R1 Bicycle Headlights.