3-in-1 10cm Solar Ruler Calculator Multifunctional Large Display Screen Mini Solar Card Ruler Calculator: Features: Material: Plastic;Size Details: 12.7cm x 4.3cm/5" x 1.69" (Approx.); This solar ruler calculator is mini and lightweight, which can be carried with you easily and conveniently. Very convenient, can save your time and improve work efficiency, convenient, practical, stylish, and cute,to bring surprises to the family. This solar ruler calculator also has the functions of magnifier, which is multifunctional and practical.This solar ruler calculator is suitable for student and school. Give your math- friend a unique gift that combines both scales and has a calculator with a large display for general purpose calculations. Product Description: Product name: Multifunctional ruler solar calculator Power Source：Solar Material：Plastic Package includes: 1x multifunctional ruler Responsive Buttons - This Calculator Has Responsive Buttons to Make Your Calculation Process Faster. When You Press a Button, The Corresponding Number is Quickly Displayed on the Screen. The Large Button Size Prevents You From Pressing the Wrong Button. Ultra-Clear Display - This Calculator Has a Beautiful Display that Shows Large Numbers Clearly and is Easy to Read From a Distance. Versatile Use - This Calculator is Suitable for Many Scenarios: Business, Office, Home, Basic Budgeting, School, Etc. Use it to Help You Make Quick Calculations. Power Supply: Solar (Works When the Light is on) and Battery. Auto Power Off, More Energy Saving. We Attach Great Importance to Product Quality and Customer Experience,If You Have Any Questions About the Product, Please Contact Us Customer Service,We Will Provide You with Satisfactory