Musical Desktop Calculator 12-Digits LCD Display Electronic Calculator Counter Big Buttons with Music Piano Play Time Date Show Alarm Clock Function for Office Business Classroom Home Supplies It is not only a calculator, but also a musical instrument, which can be used to play some simple . "CE" Button can switch long, medium and short tone. Electronic desktop calculator with 12-digits large LCD display. Tilted screen design, clear and easy to read. Ergonomic design, comfortable button. Powered by 2pcs AA batteries, easy to use.(Batteries are not included.) Support add, subtract, multiply and divide calculation function, GT, M+, M-, MRC, etc. Support time, date, alarm, control function. Let you work fast and efficiently. sound is clearer and brighter. Perfect choice for office, business, store, home using. First press "AC" button, then press "Time/Date" button twice to enter musical function. Press number key"1-9" and "+,-,x,÷,=", calculator will make a sound. Notes: voice function is in Chinese, if you mind, please do not purchase this product, thanks for your understanding! Due to manual measurement, deviation of 1-5mm is normal. Specifications: Package Weight: 254g / 9.0oz Item Weight: 197g / 6.9oz Digits: 12 Package Size: 18.2 * 13.8 * 4.1cm / 7.2 * 5.4 * 1.6in Item Size: 17.0 * 13.5 * 5.0cm /`6.7 * 5.3 * 2.0in Battery: Powered by 2 * AA Batteries(Batteries are not included.) Packing List: 1 * Calculator 1 * User Manual(English) Musical Function: It is not only a calculator, but also a musical instrument, which can be used to play some simple music. "CE" Button can switch long, medium and short tone. Wide Application: The sound is clearer and brighter. Perfect choice for office, business, store, home using. Large Display: Electronic desktop calculator with 12-digits large LCD display. Tilted screen design, clear and easy to read. Ergonomic design, comfortable button. Powered by 2pcs AA batteries, easy to use.(Batteries are not included.) Multi-Functions: Support add, subtract, multiply and divide calculation function, GT, M+, M-, MRC, etc. Support time, date, alarm, volume control function. Let you work fast and efficiently. How to Convert Electronic Piano: First press the "AC" button, then press the "Time/Date" button twice to enter the musical function. Press the number key"1-9" and "+,-,x,,=", the calculator will make a sound.