... selectly the brightness from 200 Lumens to 1200 lumens,Maintaining a fantastic balance of size,performance, runtime and use-cost, ... that its overall performance is irresistible! The S11-T has a beautiful, balanced design, solid structure, powerful performance, tactical switch, as ... Battery required: 1 x 8.4v 6400mAh Battery Pack LED Life Span: around 50,000 hours Discharge Time: around 180 minutes ...