Waterproof Aluminum bike light 15000Lumen 9x CREE XML U2 LED Bicycle Lamp+12000mAh Battery with Charger Set Type: CREE XM-L U2 LED Luminous Flux: 10000 Lumens (Maximum Output) Working Modes:Strong-Middle-Strobe Power Source: 1 x 8.4V 12000mAh battery pack (Included) Dimensions (L x w x D): 80mm x 40mm x 80mm