Features:Multi-Function:Smart Calculator & LCD writing tablet, 12 digits display, write while calculating, convenient and practical.Environmental Friendly:The writing pad supports repeated writing and paper free, no ink and no dust. LCD screen, no blue light, protect eyes.Erase & Lock Button:With an erase button, you can clear the full screen with a click. The lock key can prevent accidental deletion.Replaceable Battery:Powered by 2 * CR1220 button battery, no need to charge and connect, ultra-low power consumption, long service life.Wide Application:Small and portable, folding storage, very suitable for children or adults use in home, office, school, etc.Specifications:Color: Black/ Blue/ Red(optional)Material: ABSScreen Size: 6 InchBattery: 2 * CR1220 Button Cell, 40mAh, 3VItem Size: 16 * 15.6 * 0.5cm/ 6.3 * 6.1 * 0.2in(Unfold)16 * 7.8 * 1.2cm/ 6.3 * 3.1 * 0.5in(Fold)Item Weight: 120g/ 4.2ozPackage Size: 17 * 8.4 * 1.5cm/ 6.7 * 3.3 * 0.6inPackage Weight: 150g/ 5.3ozPacking List:1 * Writing Tablet1 * Stylus