Feature:1. [With Writing Tablet] The combination of a standard function desktop calculator and a writing tablet, can effectively save your pen and paper, and you can calculate and record what you want.2. [Folding Design] This solar calculator adopt folding design, which is lightweight and easy to carry, can be put in bag, pocket, or even purse,3. [Eco Friendly Material] Made of high quality ABS environmentally friendly materials, which is durable, wear resistant, and can be used for a long time.4. [Stable Performance] With exquisite workmanship, non toxic and harmless, safe, stable in performance and easy to operate, so you can use it with confidence.5. [Widely Application] This writing tablet calculator is widely used in many situations, such as office, business, household, school, study room, etc.Specification:Item Type: CalculatorCombined Size: Approx. 160 x 78 x 13 mm / 6.3 x 3.1 x 0.5 inExpand Size: Approx. 160 x 158 x 7 mm / 6.3 x 6.2 x 0.3 inBattery: Button battery CR1220 120mAh (Battery Included)Working Temperature: -10-40Material: ABSFunction: Writing tablet + calculatorWeight: Approx. 144g / 5.1ozColor: Black.Package List:1 x Calculator (Battery Included)1 x Pen1 x Manual