Compact rechargeable LED hand held lighting fixtures with zoomable lenses, strobe and SOS capabilities, and water-resistant scores

https://www.scribd.com/document/992450864/Heat-Management-in-High-Output-LED-Flashlights-132428

Compact rechargeable LED hand-held lights with zoomable lenses, strobe and SOS purposes, and water-proof scores, most suitable for cycling, camping, strength outages, and established duties with minimum repairs.