For inspections, repairs, and work after dark, the Coast GX10 550 Lumens Flashlight provides up to 550 lumens in a portable task-focused design. Its Pure Beam optic transitions from flood to spot and runtime up to 18 hours support close-range work and wider-area visibility. IP67-rated Waterproof combines with power source: 3 x AAA or zx557 (rechargeable not included) to support maintenance, inspection, and jobsite productivity.