Our most budget-friendly 4-function calculator features a percent key square root key and an 8-digit display. Solar-powered with battery backup. Includes 10 calculators in each vibrant fun color: red, blue, lime, green, orange and purple packed inside a sturdy storage box. Measures 21/2"W x 41/2"H x "D. Screen measures 1 5/8"W x 5/16"H. Set of 100.