Soonfire X7 Bike Headlight: 2CREE XM-L LED, 1800 Lumens, Far(R) and Near(L) Beam Design, Over 10 Modes, 8000mAh (618650) Rechargeable Battery Pack, Extra Long Battery Life CREE XM-L LED: This Bike Light has 2*CREE XM-L LED. Operating time: Far Beam only: 12h(High); Near Beam Only: 12h(High); Combine Beam: 8h(High) BATTERY PACK: 8.4V 8000mAh 18650 rechargeable battery pack with six 18650 batteries OVER 10 MODES: Near beam(L): Low/Middle/High; Far beam(R): Low/Middle/High; They can be combined into 9 modes. Additionally, SOS 360ROTATION: When it is fixed on somewhere, which can be rotated 360. It is the best choice for night cycling/camping HIGH-QUALITY: All aluminum-alloy. Won't rust or corrode. The light set will not only keep you safe and illuminate your path, it will also last longer