This star strobes red and blue real fast. It’s flash can’t be much larger. Our flashing star blinks so fast its like its on a turbocharger. Height: 1.1 in. , 2.8 cm. – Width: 1 in. , 2.54 cm. – Ring: Adjustable: One Size Fits All – Colors: 1 Blue, 5 Red. Includes 2 replaceable cr927 batteries.