Abacus, with storage case, over 100 beads. - Type: Abacus - Color: Black and Orange - Accessories: Storage case - Number of beads: Total of 100 or more - Bead arrangement: 4 rows Thank you for viewing. This is an abacus (23 digits). The length is about 35cm. Perfect for practice at school or abacus class. It's in near-new condition, so it's clean. The beads move smoothly.