Chelsea Online

The Casio WM-320MT is a waterproof and dustproof desk calculator with tax and cost/sell/margin functionality. It features an extra large 12-digit display, and a 3 key memory with a backspace function. It comes with 1 x LR44 battery included as back up, whilst it can also use solar power. This product also features a removable, washable keyboard. Removable washable keypad 3 key memory and backspace function Grand total and percentage keys Extra large 12 digit display Solar power with battery back up Comes with 1x LR44 battery