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Unshudo USM-100 Abacus Soromatic 23 Digits Hippo Ball

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$68.25

$ 32 .99 $32.99

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[Features] One-touch breakdown type / [Case] Hard case (Velcro type)
Target Audience: For intermediate users
Frame shape/material: Triangle (reinforced grommets), laminate material
Ball Material / Quality: Birch Ball (Medium)
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 (

You can divide it with a single touch.
Great for speeding up your calculation.
Hard case included.
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.

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Unshudo USM-100 Abacus Soromatic 23 Digits Hippo Ball