Sakura Crepas Unshudo Soromatic Abacus 23 Digit US

You can divide it with a single touch. Great for speeding up your calculation. Hard case included. Boxwood Boxwood (spass): Tree type of material. Fine and solid wood Boxwood beads are yellow balls, and the more you use it, the better the tone is. For advanced players Spassing plants are thin in diameter and are difficult to insert boulder, making them more expensive. Abacus Features: Learning abacus is said to improve not only calculated skills, but also concentration and patience. The ball material is carefully selected, and carefully adjusted to withstand a long time, so it can be used with confidence regardless of the beginner or advanced level. [Features] One-touch breakdown type / [Case] Hard case included (magnetic) Target Audience: For advanced users Frame shape/material: Triangle (reinforced grommets), laminate material Ball Material / Quality: Boxwood (top) Size: 13.2 x 2.6 x 0.7 inches (334 x 66 x 19 cm); Weight: 14.1 oz (400 g); Product Size: 13.2 x 2.6 x 0.7 inches (