The Maul MTL 600 is a desktop calculator with commercial calculation functions such as tax calculation (price with/without tax key), profit margin calculation, profit-cost-margin calculation and a percent key. The Expense and Profit Cost Margin keys have a signal colour, making them easier to find. The calculator is equipped with a rounded and therefore more legible 2-line LCD display. The calculation method is also displayed here. The MTL 600 is battery and solar powered. If you leave the calculator on without using it, it will automatically turn off. It has a size of 103mm x 170mm (LxW).