Approximate battery life:3 years (1hour of operation per day).
Power supply:Solar cell and a single G13 type button battery (LR44).
This feature is great for repeat calculations 10 + 2 digits 10-digit mantissa + 2-digit exponential display Solar & Battery Solar powered when light is sufficient, battery powered when light is insufficient Key rollover Key operations are stored in a buffer, so nothing is lost even during high-speed input Large display Large, easy-to-read display Plastic keys Designed and engineered for easy operation Basic Mathematical Functions Trigonometric, Exponential logarithmic, etc Basic Statistics Standard statistics functions such as Mean, SUM, Standard Deviation, and Regression Financial functions are built in, making financial calculations easy. The FC-200V comes equipped with a full-dot 4-line display that provides easier scrolling between parameters and simplifies input, confirmation, and editing The result appears immediately after you press the SOLVE key Once you use a parameter value or setting in a calculation, you can assign it to a shortcut key for instant recall whenever you need it. Ideal for all home, office, and business workspace or institutional environments, this Casio calculator saves you from frustrating calculations, saves time, and increases your operational productivity. The Casio FC-200V is a financial calculator, that provides reliable performance at an affordable price.