size:161 x 78 x 14MM Material: PP+silicone colour: black Package Contents: 1 x Office Desk Calcultors 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 10-Digit Display Office Desk Calcultors with Erasable Writing Table Calculator,10-Digit Display Office Desk Calcultors with Erasable Writing Table for Basic Financial Home School [Calculator with Notepad]:Have you ever been trouble that you had to remember the result of a number during a calculation,but couldn't find paper and pen to record it? This finance calculator is comebining with lcd writing board which can solve this problem perfectly.It is designed by a Japanese designer which pursuing and paperless eco-friendly.You can take notes while calculating,calling and meeting,which improving your study and work efficiency. [ and Portable & Extre Protecive bag]:This mini calculator weighs 128g and have a flip cover that can be protecting the keyboard.You can put it in your pocket and bag.It is portable that you can carry it to anywhere and can be removed and used immediately when needed. [Calculator with Notepad]:Have you ever been trouble that you had to remember the result of a number during a calculation,but couldn't find paper and pen to record it? This finance calculator is comebining with lcd writing board which can solve this problem perfectly.It is designed by a Japanese designer which pursuing and paperless eco-friendly.You can take notes while calculating,calling and meeting,which improving your study and work efficiency.