The Compucessory 72000 keyboard calculator is the perfect companion for cashiers, office workers, and more. This calculator features an eight-digit LCD memory with a 3-key memory. The calculator includes one G-10 battery and measures 1 1/4" x 8 3/4" x 3/4" with an extra-slim design to fit anywhere. Place this at the bottom of your keyboard, on your desk, on a workbench - anywhere. Dual solar/battery power options and rubber grip keyboard protects make this the perfect buy for your calculating needs.