Erich Krause 16-digit desktop electronic calculator

This electronic calculator in an aluminum-coated plastic case has a 16-digit LCD display with an acrylic cover and a tilting stand. It has a dual memory key. An optimal set of calculation functions allows you to perform basic mathematical operations, calculate percentages, retail margins, find the square root, summarize the operations performed, and store the intermediate result. The convenient keypad has a "00" (zero) button and a backspace key. It has both a rounding selector and a decimal point selector. The solar power unit can be charged from both direct sunlight and office ceiling lights, helping to conserve the battery life of an alkaline battery. The calculator's power supply automatically shuts off if the device is not used for 7 minutes.