Great prices compared to major brands. Features:

• The eight keys represent the eight normal Schilling groups of Leucocytes - Baso, Eosin, Myelo, Juven, Stab, Seg, Lymp, Mono.
• Eliminates calculations when taking leukocyte counts
• Records up to 999 on each unit
• Bell sounds at 100 count increments
• Two reset knobs