Features: and CLASSIC WOODEN ABOCUS. This traditional wooden abacus is especially for traditional traders, accountants, clerks, students and teacher, or a great gift for abacus collectors. for CREATIVE MATH GAME. Use this maths resources to enhance your child's number bonds and advanced counting skills. Luxury vintage abacus with wooden beads perfect for students, teens, minds learning, math lessons, school classes. PORTABLE AND DURABLE. This portable classic abacus is designed with 13 Rows, 15 Rows, 17 Rows. 5 Beads of each row. It consists of a sturdy abs frame, and wooden beads. Lightweight, waterproof and durable. TRADITIONAL COUNTING TOY. This abacus is a good math educational toy that increases the toddlers and children practical ability and stimulates the activity of the brain cells, improving the childs intelligence level, which can also teach older students how to count and compute mentally. WITH RESET BUTTON. Perfect workmanship. The frame of the abacus is finely polished and smooth surface without burrs, so you can use it comfortably, won'for t hurt your hands. Specifications: Material: Wood Metal Rubber Type: 13-row and Red Beads 13-row and Black Coffee 13-row and White Cream-colored 15-row and Black Red 17-row and Red Cream-colored 17-row and White 17-row and Black Coffee 17-row and Black Red Small Size: Approx. 24.5x7.5x2in or 9.65x2.95x0.79cm Medium Size: Approx. 34.6x8.6x2.1in or 13.62x3.39x0.83cm Large Size: Approx. 38.6x9.2x2.1in or 15.2x3.62x0.83cm Weight: Approx. 241g Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Piece Portable Wooden Abacus Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.