Description: Versatile Timer Functionality: This electronic hourglass is great for children students, offering a personal timer that can be set anywhere from 1 to 30 minutes, making it ideal for various activities tasksAdjustable Lighting: Enjoy the soothing glow of this sensing hourglass with adjustable light brightness, allowing you to create the great ambiance for relaxation or focusCompact Durability Design: Made from quality pp electronic components, this small sized hourglass is both sturdy portable, fitting seamlessly into any home or study environmentRechargeable: Equipped with a 450mAh battery, this electronic hourglass offers up to 5 hours of continuous use on a single charging, ensuring its ready whenever you need itComplete Package: Each purchase includes a electronic hourglass, a USB charging cable, a bilingual instruction manual (Chinese and English), providing everything you need to get started right away Specification: Battery capacity: 450mAhDuration: 5 hours continuousPower supply mode: USB chargingMaterial: pp Size Chart: 9 7cmx5 5cmx2 05cm/3 82inchx2 17inchx0 81inch Package Includes: 1 electronic hourglass, 1 charging cable, 1 instruction manual Note: 1 Please allow slightly error due to manual measurement 2 Due to the difference between different monitors, the picture may not reflect the actual color of the item 3 Wish you a wonderful on-line shopping!