Features: 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. 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. 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. 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.) Wide Application: The sound is clearer and brighter. Perfect choice for office, business, store, home using. Specifications: Digits: 12 Battery: Powered by 2 * AA Batteries(Batteries are not included.) Item Size: 17.0 * 13.5 * 5.0cm /`6.7 * 5.3 * 2.0in Item Weight: 197g / 6.9oz Package Size: 18.2 * 13.8 * 4.1cm / 7.2 * 5.4 * 1.6in Package Weight: 254g / 9.0oz Notes: The voice function is in Chinese, if you mind, please do not purchase this product, thanks for your understanding! Due to manual measurement, the deviation of 1-5mm is normal. 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. 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. 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. 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.) Wide Application: The sound is clearer and brighter. Perfect choice for office, business, store, home using.