Portable Chinese Wooden Abacus Arithmetic Calculator, Called The Chinese Lucky Product Details - The abacus was a calculator invented sometime between 1000 BC and 500 BC in China, often constructed as a wooden frame with beads sliding on wires. - It is the Chinese calculator of old days used by literate businessmen and financial planners. - Owning an abacus was an auspicious sign that one had way too much money to keep track of. - Display this abacus in the Northwest for solid financial support from influential people. - Place in your workdesk to boost business luck and increase your income. - Those in the retail business can energize their cash register with this abacus to multiply their sales profits. - The abacus is also widely used in teaching counting and mathematics. - It is practical and educational, it is great education tool for teacher and mathematic tool for children. Material:wooden and plastic beads. Dimension:Approximately 9.65" X 3" X 0.75" 13 digit professional soroban style abacus with wooden frame. Both practical and educational. (Instruction not included) This Chinese tool reminds me of how I learned to count and perform the basic mathematical operations: Addition, Subtraction, Multiplication, and Division. Sturdy and very Durable Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.