Digital readout with soft-touch buttons Electronic with LED display Ten buttons for counting with audible beeps Audible long beep when 100 cells are counted No mechanical gears Ten buttons–8 named cells + 2 blanks Pictures and names of blood cells next to each button Ten 2-digit windows + one total 3-digit window Reset button to clear all counts Percentage button for any-time percentage calculations 110V-220V Auto-switching