Features: Brand Classic wooden abacus. This traditional wooden abacus is designed for traders, accountants, clerks, students, and teachers, or makes a great gift for abacus collectors. Ideal for creative math games. Use this math resource to enhance number bonds and advanced counting skills. A vintage-style abacus with wooden beads, perfect for students, teens, learners, math lessons, and classroom use. Portable and durable design. This classic abacus is available in 13-row, 15-row, and 17-row styles, with 5 beads per row. Constructed with a sturdy ABS frame and wooden beads. Lightweight, waterproof, and long-lasting. Traditional counting toy. This abacus serves as an educational tool that helps develop practical math skills in toddlers and children, stimulates brain activity, supports intelligence development, and aids older students in learning mental calculation. Equipped with a reset button. Features precise craftsmanship. The abacus frame is smoothly polished with a burr-free surface for comfortable handling and safe use. 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. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual color of the item may vary slightly from the images shown. Package includes: 1 Piece Portable Wooden Abacus