Bicycle Light Set,Optimal road illumination thanks to extra bright headlights with switchable luminosity (90/70/30/15 lux),Front light with integrated lithium-ion battery (1800 mAh), including Osram LED,Automatic light control � front light adapts independently to the ambient light,Rear light with brake indicator function, 3 bright LEDs (4 cd) and integrated Li-Ion battery (300 mAh),Emergency brake light function � flashes multiple times during heavy braking, lights up brighter during normal braking,With USB-C charging socket and USB-C charging cable (approx. 50 cm) for convenient charging,Splash-proof housing (IP44),Luminosity: max. 90 lux,Front light burn time: up to 8.5h,Burning time rear light: up to 5-6h,Lifespan per LED: approx. 50,000h,Material: Plastic,Front light size: 11 x 4.1 x 4.5cm,Rear light size: 4.8 x 2.5 x 1.95cm