Product features:

The abacus,also called a counting frame,is a calculating tool where beads are 
moved up and down and by feeling and looking at the beads, complex calculations 
are made.
Soroban abacus is great for rapid calculation.This abacus is encased in a durable plastic frame and suspended with bamboo rods.It is a user-friendly abacus/soroban which is highly recommended for use in any math abacus/soroban course.
Features:
15 bamboo rods,with 1 bead above and 4 beads below on each rod
Traditional arithmetic abacus,a classic tool that is still fully functional
A nice tool for kids' early mathematic education
Can be used as classical calculator in office,education tool for teacher or a gift for abacus collectors
Digit number:15
Material:Plastic frame and beads,bamboo rods
Color:Black frame,brown and black beads
Size (L x W x H):Approx.L 23.5cm * W 6.4cm * H 1.1 cm
Weight:137g
 
Package Included:
18pcs Abacus