4Sevens Quark AA LED Flashlight - R5 Edition,4Sevens,QAA" /> Power: One AA Battery (0.9V~4.2V) Output: Maximum - 90 lumens; Moonlight - 0.2 lumens Runtime: Maximum - 1.2 hours; Moonlight - 10 days Strobe: Strobe, S.O.S., and Beacon flash modes Length: 3.8 inches Diameter: 0.86 inches Weight: 1.8 ounces