The Astro 40SLMAX 450 Lumen Rechargeable LED Slim Light w/ XL Battery is the newest lighting innovation from the creators of the popular 40SL worklight. This enhanced unit features a unique dial adjust power switch for full control of the 0-450 lumens range, and a massive 3,350mAh lithium battery for 13 hours of work time at 50% power, or 3.5 hours at full power. This light features a new collapsible hook design, and a swivel and stay base with a 20lb magnet.