Item Type: Calculator <br>Combined Size: Approx. 160 x 78 x 13 mm / 6.3 x 3.1 x 0.5 in <br>Expand Size: Approx. 160 x 158 x 7 mm / 6.3 x 6.2 x 0.3 in <br>Battery: Button battery CR1220 120mAh (Battery Included) <br>Working Temperature: -10-40℃ <br>Material: ABS <br>Function: Writing tablet + calculator <br>Weight: Approx. 144g / 5.1oz <br>Color: Black<br>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. <br>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, <br>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. <br>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. <br>5、[Widely Application] This writing tablet calculator is widely used in many situations, such as office, business, household, school, study room, etc.1 x Calculator (Battery Included)<p>1 x Pen</p><p>1 x Manual</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.