Mounted on attractively finished wooden base 20 beads per wire Unit is 13.5"x9.5"x4" Weighs just under 3 lbs. Ideal for childhood education For centuries this simple device has been employed as a learning and counting tool around the world, and there is a reason it hasn't died with advancing technology; find out why as you see the benefits of visual and hands-on practice of math for the developing mind. Blurring the line between toy and tool, the ELabs Abacus is the perfect way to introduce mathematics to young learners.