12 Pcs\. 8 Digits Thin Calculator Slim Credit Card Design Calculator Portable Features: This 8 digits ultra thin calculator is powered by solar energy and needs enough light to work properly. It does not require additional battery or power supply, convenient to use. The solar pocket calculator is very light and thin, easy to hold in your hand, and can also be put in your pocket for outgoing. Specifications: Material: plastic Color: as pictures shown Size: 3.35 x 2.09 inch Package includes: 12 x Slim credit card design calculators Note: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays. Package contain: you will get 12 pieces of 8 digits ultra thin calculators, which are suitable for home, office and school use; You can share them with friends Power supply: slim credit card design calculator adopts solar charging design, no battery or power supply needed; It can be applied at any time as long as it gets sufficient light, which is very convenient Small size: solar power pocket calculator measures about 3.35 x 2.09 inch, compact in size and light in weight, can be easily held in hands, and fit your pockets, pencil cases, backpacks and more Quality material: portable mini calculator is made of plastic, light but sturdy, not easy to break; Reliable material with a slim design makes this pocket calculator can serve you for a long time Gift choice: the credit card size calculator can be carried easily, which is very suitable for students in the school, accountants in the office, tellers in the bank and other people who need to calculate frequently