Features: brand 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 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. 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 & Red Beads; 13-row & Black Coffee; 13-row & White Cream-colored; 15-row & Black Red; 17-row & Red Cream-colored; 17-row & White; 17-row & Black Coffee; 17-row & Black Red Small Size: Approx. 24.5x7.5x2in/9.65x2.95x0.79cm Medium Size: Approx. 34.6x8.6x2.1in/13.62x3.39x0.83cm Large Size: Approx. 38.6x9.2x2.1in/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