The 9050 includes industry first technology - The flexible battery system allows you to select between Li-ion, AA alkaline or AA NiMH to operate the light. Four battery slots let you maximize runtime. The quick-change battery system means that you have continuous lighting to get the job done. Select between spot, flood, spot/flood, or flashing modes to find the right beam for your job. The spot/flood light head outputs up to 3369 lumens without the need for diffusers or attachments so you can quickly choose the right beam type for your job. A redesigned charger base makes mounting and dismounting the lantern quick and easy. Rear taillights with adjustable colors make notification or identification as simple as pressing the dedicated switch.