This liquid motion toy is not only a beautiful hourglass ornament but also a practical educational science tool. It can be used in classrooms to demonstrate the principles of heat transfer and . The adds a romantic touch, making it a thoughtful choice for loved ones. Place it on your desk or shelf to enjoy its calming and mesmerizing effect. Features - Color: Assorted Color -Material:Glass - Size: 17.50X4.50X4.50cm/6.88X1.77X1.77in -Artistic home decor: the design and craftsmanship make it a artistic decoration for any home -Science experiment kit: a great addition to any science experiment kit, demonstrating the principles of heat transfer -Novelty glass timer: the unique and design of the glass timer makes it a standout piece in any room -Liquid desk timer: adds a touch of elegance and functionality to your desk, It's for both home and office use -Creative liquid timer: the creative design and liquid motion make it a fascinating and engaging decorative piece Package list: 2 x temperature hourglass timer