Heavy-Duty swivel-lock base features a removable 20lb magnet, Unique dial power swith has fluid variable adjustment from 0-410 lumens, 10 hour work time at 50% power, 2.5hrs a 100%, 40 chip COB LED array with light density many times higher than SMDLED's whil consuming less power, Externally and internally designed for harsh conditions and dirty enviroments