Fascinating Effect: The falling foam has a soothing and fascinating effect and can entertain children for hours. Gravity will guide the colored water droplets to move down at a slow motion speed. Perfect Toy: This liquid timer is the perfect irritability toy, desk toy, or even classroom reward. Visual Enjoyment: The sand replaces the oil and the water slowly flows and is a different visual enjoyment. You can enjoy good times and good memories. This mini sports timer can create a charming visual effect decoration for all office or home desktop computers. Just turn the device over and watch the colored oil drip from top to bottom. Time Assistant: Help you effectively manage your time and reach your goals on time. At the same time, this liquid exercise timer can help children concentrate while watching colorful bubbles bounce to the bottom. Material: Plastic, Acrylic Colors: as shown in picture Size: 9cm x 3cm x 14cm / 3.54" x 1.18" x 5.51" (Approx.) Package Included: 1pc x Oil Hourglass