Description: Versatile Timer Functionality: This electronic hourglass is great for children and students, offering a personal timer that can be set anywhere from 1 to 30 minutes, making it ideal for various activities and 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 and Durability Design: Made from quality pp and electronic components, this small sized hourglass is both sturdy and 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, and a bilingual instruction manual (Chinese & 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!