Name: Calculator Handwritten Board Size: 150*90*15mm Have you ever encountered such troubles: When calculating, you must remember the result of a number, but you can't find the paper and pen to record it? This financial calculator is combined with the LCD writing board. This problem was solved well. It is designed by a Japanese designer pursuing minimalist and paperless and environmentally friendly. You can take notes when calculating, calling, and meeting to improve your learning and work efficiency. Small calculator button uses high -quality silicone, comfortable feel, waterproof, sensitive and mute, does not interfere with others, "lock" key function to save important notes to prevent deletion. The basic calculator is an ideal choice, leaving information for children and themselves, and performing 4 functional mortgage calculators and tax conversion effective finance, office, accounting, schools and families. This mini calculator weighs 4 ounces and has a flip cover that can protect the keyboard. You can put it in your pocket and bag. It is portable, you can bring it to anywhere, you can take it out and use immediately when needed. We also provide a protective bag, which is a high -quality and waterproof this conversion calculator.