Small and portable design, the size is 14.5cm*9cm, very light, easy to put into pockets, school bags. 12-bit large screen display, contains LR44 battery, can be used for 2 years, adopts intelligent power-saving mode, enters sleep mode after a period of inactivity, press any key to wake up, long-lasting battery life. The back is equipped with a non-slip pad, which is not easy to slide on the desktop; the back is also equipped with a support shelf, which is at a 15-degree angle for easy reading. The mute button design will not disturb others when pressing the button. The round button is exquisite and fashionable, and the durable button can be pressed tens of thousands of times. It's simple and beautiful, it's a reliable device for your school work, office and home use 1027Perfect after-sales service: If you have any quality issues or do not like it after receiving it, please contact us and we provide free return and exchange services