Features 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