Impact resistant, survives a 4 meter drop. Shatterproof lens protects LEDs from damage. Weatherproof, push button switch and anti-roll design. 20 lumens, 30 hour run time on 2 AA alkaline batteries. 5.7 oz with batteries. 6.76 in length x 1.75 in width. 2 AAEnergizer batteries included. Black/dark gray in color.