... .Luminus flux:1200lm 3.Led life:50000h 4.Rechargeble. Specifications:1, LED Chip: CREE TR-6 900LM2, Integrated digital circuit board ... color: Asian black9, 4x18650 battery capacity: 4400mAh10, Voltage: 8.4V, sustainable work 3-4 hours Applications:1, Bicycle lighting, fixed on bicycle2 ... , Worn on one's head by headband high brightness led bicycle light and head light with cree chip MI-BL-01