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. 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, beads. Lightweight, waterproof and durable. WITH RESET BUTTON. The frame of the Chinese abacus is finely polished and smooth surface without burrs, so you can use it comfortably, won'for t hurt your hands. The handy reset button is for easier to operate for beginners. TRADITIONAL COUNTING TOY. This abacus is a good educational toy that increases the toddler 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. 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. Specifications: Material: Wood; Metal; Rubber Type: 13-row & Red Cream-colored; 13-row & Black Brown; 13-row & White Red; 13-row & Coffee Black; 15-row & Black Red; 17-row & Red Black; 17-row & Brown Red Small Size: Approx. 27x9x2in/10.63x3.54x0.79cm Medium Size: Approx. 34.5x9.5x2in/13.58x3.74x0.79cm Large Size: Approx. 38.5x9.5x2in/15.16x3.74x0.79cm Weight: Approx. 296-582g 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