["Features:\r\nSpecifications; this is a 13 digit professional soroban abacus \r\nProfessional tool; the soroban or counting tray is a classical form of the abacus; the abacus is a calculating tool that was used for centuries before the adoption of the written modern numeral system; it is still widely used by merchants, traders and cle\r\nEducational tool; in addition to being a professional tool, the soroban or abacus is also an educational tool; the abacus is widely used in teaching children counting and mathematics; people who become proficient in the use of the abacus almost automatically become adept at mental calculation; instructions are not included\r\nStandard design; this soroban abacus has a plastic frame; its classical, standard design allows for its ease of use as a professional and educational tool\r\n\r\nSpecifications:\r\nColor:As the picture shows\r\nMaterial:Plastic\r\nSize: 12.5x7.5x2.5cm(4.92x2.95x0.98inch)\r\nQuantity: 1Pc\r\n\r\nNote:\r\n1.Transition: 1cm=10mm=0.39inch\r\n2.Please allow 0-3cm error due to manual measurement. pls make sure you do not mind before you bid.\r\n3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes: (Without retail package)\r\n1Pc x Plastic Abacus"]