As large as a standard letter-size page, this is the biggest and most attractive calculator around. Push the 1 x .75 inch black number pads, with large white numbers, to do standard calculations. Entries appear on the easy-to-see readout screen. Uses two AAA batteries (not included). Measures 11½ x 8½ x 3/8 inch. The display is 3/4 inch high. Has volume control and you can shut the voice off by hitting volume button until you can no longer hear it. If you want to listen in privacy, buy the optional earphones #384316 for $1.95.