Nanairokan One-Touch Abacus, 23-Digit, 4-Bead Standard, for Elementary School Students, Math Learning, Mental Calculation (Main Unit + Denim Case)

Comes with a case! This is a standard 23-digit abacus. It comes with an original abacus case for easy transport and storage! Its simple, timeless design is timeless. It also has a loop so you can hang the case. The interior of the case is lined with polyester to protect it from dust and scratches. Abacus size: Approx. 36 x 6.5 x 1.5 cm. Case material: Denim exterior, polyester interior. Perfect for a variety of occasions, from extracurricular activities and classrooms to the workplace and work, and as a brain teaser or finger exercise.