Underwater Kinetics C8 eLED (L2) Dive Light Alkaline performance - 900 lumens on high, 400 lumens on low Run time: 5.8 hrs on high / 20 hrs on low Unique optical design unites two high intensity LEDs into one beam with twice the intensity Switch between full and half power to extend battery life Choose between the rechargeable battery pack, or standard alkaline C-cell batteries.