Policy: Please feel free to contact us, any problems will be solved in the best possible way. Reset Button: The soroban's reset button is very convenient to use. When you are finished processing an entry and moving on to the next entry, gently press the reset button to return to the original state. Perfect Finish: The soroban's frame is polished and rounded without burrs, so you can use it comfortably. Increased Intelligence: Using the abacus increases a child's practical ability and stimulates the activity of brain cells, improving a child's intelligence level. Material and Size: The soroban consists of 13 rods and 5 beads. It consists of a plastic frame, beads, and bamboo poles. Its size is 24.6 x 7 x 1.8 cm. Product Description: Soroban style chart ideal for quick calculations. -This abacus is wrapped in a sturdy plastic frame and fitted with bamboo sticks. -It is a user-friendly abacus / soroban that is recommended for use in all mathematical soroban courses. Features: Number of digits: 13. Material: plastic frame and balls, bamboo sticks. Size (L x W x H): approx. 25 x 7.5 x 2 cm. Scope of delivery: 1 x abacus with 13 bars.