$5.49

The 20 offers 4 easy-to-use functions. Includes memory and square root capabilities. Built-in memory with 3 memory functions. Easy-to-read 8-digit display. Automatically shuts off when not in use to save battery power. Runs on 1 button cell L1131 battery (included) and solar power. Dimensions: 0. 5in. H x . 75in. W x 4. 5in. D. Ergonomic styling makes it easy to carry. Available in Technology > Office Machines > Calculators & Supplies > Display Calculators