Features: 【Musical Function】: 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. 【How to Convert Electronic Piano】: 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. 【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】: 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: 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. Packing List: 1 * Calculator 1 * User Manual(English)