The Casio EL334FB is a smart and sturdy twin powered calculator that will take being knocked about in your bag. Its grey silicone edging will help it absorb bumps and bangs along the way. The keypad is colour coded for ease of use and the calculator has a large, readable 10-digit angled display. It has a four key memory and other handy functions like the grand total and double zero button which make it a joy to use.