Double-sided Double-color frame:elegant appearance, uphold simple-style,fresh and natural without losing color which bring you not the same artistic experience,and you can change it anytime. High quality:New plastic frame has been applied.It's strong and stable with high quality. The screen made up of sealed glass,special sand,colorless liquid,air bubbles.products' detail is fine, carefully screened sand can make a wonderful picture. It's placed on a desk and pick it up,rotate it,and then set it onto the stand manually like a picture frame.Watch mountains, valleys and dunes create before your eyes Moving sand pictures create a new sand picture with each turn.What's more?Looking at the ever-changing sand flow, to relieve stress, it's good effectiveness of the release of eye fatigue, especially suitable office workers, students, long time in the computer next to the work of people.