Polaroid Digital Macro 16 LED Ring Light (Includes 49/52/55/58/62/67mm Adapters) For The Pentax Q, Q7, Q10, K-3, K-50, K-500, X-5, K-01, K-30, K-X, K-7, K-5, K-5 II, K-R, 645D, K20D, K200D, K2000, K10D, K2000, K1000, K100D Super, K110D,ist D,ist DL,ist DS,ist DS2 Digital SLR Cameras Ultra Bright 16 Cool Running LED's Ideal For Close-Up Photography, Especially Online Sales, Medical, And Scientific Applications No Bulky Battery Packs Or Cords Required! Provides Shadow-Free Lighting, Color Temperature: 5500K Uses 4 AAA Batteries, Will Last for More Than Three Hours