Wisdom Ancient Civilization:Symbolizes the beautiful meaning of opportunity and wealth.Professional reliability goes back centuriesthe classic professional soroban abacus still used in parts of the world by merchants, traders, and clerks. Great Educational Tool:The standard abacus is widely used in calculator math counting tool , abacus for kids toddler cultivate and improve computing power, memory and attention. Beautifully Crafted Wooden&Safety Material: This soroban abacus with a crafted wooden frame.Shiny smooth beads made of harmless artificial stone featuring non-marring, shockproof&anti-skid wide rubber feet! The aesthetics of it worthy of being a decorative piece as well,lucky abacus is great gift. Specifications: This 17 Column mathematics calculators soroban measuring in at 15 x 3.7 x 1 in, with a handy reset button . Have a classic abacus handbook includedlearning becomes very easy. Attention: Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. The color may vary depending on the monitor, please understand. Attention: Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly