Feature(may vary by option.)

●Target Audience: For intermediate users
●Frame shape/material: Triangular, laminate material
●Ball Material / Quality: Birch Ball (Medium)
●Size: 15.4 x 2.6 x 0.7 inches (391 x 6
●Weight: 9.5 oz (270 g)

[Introduction to Beginner  & Platama]




[Beginner  & Birch Ball (Medium)]




[Intermediate   &  New Boxwood Ball]




[Medium to Advanced |  Birch Ball (Top)]




[Intermediate   &  Birch Ball (Medium)]





Description

General Office and Children Abacus
Carefully adjusted to withstand long-term support.
Birch Ball
Birch: Tree Type Fine and solid wood
Hippo balls are brown balls and are most commonly used. Suitable for beginner to advanced use.
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.



From the Manufacturer



Unshudo Abacus, 23 Digits 4 Balls Unshudo Abacus, 23 Digits 4 Balls Unshudo Abacus, 27 Digits 4 Balls Unshudo Abacus, 27 Digits 4 Balls Unshudo Abacus, 27 Digits 4 Balls
Customer Reviews
4.3 out of 5 stars
125
4.3 out of 5 stars
125
4.3 out of 5 stars
15
4.3 out of 5 stars
15
4.3 out of 5 stars
15
Price ¥10,503 ¥8,729 ¥11,929 ¥4,200 ¥7,275
Item No. 341000 34503 741000 74500 74503
Style Birch Ball Shin Boxwood Birch Ball Birch Ball Shin Boxwood
Vertical 66mm 66mm 66mm 66mm 66mm
Side 336mm 336mm 391mm 391mm 391mm
H: 19mm 19mm 19mm 19mm 19mm
Weight 240g 240g 9.5 oz (270 9.5 oz (270 9.5 oz (270