Flip It and Watch the Colour FlowA compact liquid timer that sends coloured liquid travelling through a cross-over pathway with no batteries, buttons or setup.The Cross Over Liquid Timer creates a slow-moving visual display each time you turn it over. Coloured liquid travels through the clear cross-over design, forming changing shapes and movement that is satisfying to watch.A simple visual pausePlace it on a desk, table or shelf and flip it whenever you want a short screen-free visual break. There is nothing to set or operate, so children, teens and adults can simply turn it over and watch the movement begin.No batteries or cordsThe timer works entirely through gravity. Flip it over when the liquid reaches the bottom and the flow starts again in the opposite direction.Compact for desks and sensory spacesAt approximately 9 x 13.8 x 2.1 cm, it is easy to keep on a desk, in a classroom area or with other visual and sensory resources.Designed for ages 5+The durable acrylic-style frame contains non-toxic coloured liquids. Use under adult supervision and keep away from younger children due to small parts.