Warranty : 3 Year's Manufacturer Warranty , Dimension : 30.1x123x140mm (HxWxD) Features: 150 steps check :Displays up to 150 previous calculation steps. Localized number display : Displays numbers in four digit separator formats(Type A, Type B, Type C and Indian).Extra Large display: Larger display makes more data easier to read. Two-way power (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. Plastic keys :Designed and engineered for easy operation. Tax calculation : Automatic calculation of price plus tax, price less tax, discount, selling price, tax amount, discount amount, and margin amount. Regular percent : Regular percentage calculations. Mark-up : All the mark-up capabilities of an adding machine for simplified cost and profit calculations. Function command signs: A symbol (+, -, x) on the display indicates the status of operation you are currently performing.