Unique "Fireflies in a Jar" Solar Table Lamp Frosted glass & stainless steel clasp offer a waterproof seal for indoor & outdoor useCharge under sunlight or next to a window with the lid open or closed 8 hours of charge time provides up to 40 hours of light Two-color switchable light:Blue/Yellow (BY)Product Size: 4" X 4" X 6"Weight: 2.25 lbs