Super-bright COB LED bulb delivers a wider and brighter lighting area Two settings for varied brightness and run times Ball swivels 180+ degrees on magnetic base Automatic shut off and overcharge protection prolongs battery life IP65 rated for dust and water resistance Battery charging indicator light Constant current design delivers rated light output throughout battery charge cycle 3-in-1 charging system compatible with included mini USB cable and AC power adapter Specifications: Brightness Setting: 500 lumens (high), 250 lumens (low) Battery: 3.7V, 2600mAh lithium-ion rechargeable Run Time: 2 hours (high), 4 hours (low) Diameter: 3.4" Weight: .85 lbs