Educational Games -13 Row Vintage Chinese Wooden Bead Arithmetic Bead with Box Calculator Highlights Generic 13 Row Vintage Chinese Wooden Bead Arithmetic Bead with Box Calculator 13 Row Vintage Chinese Wooden Bead Arithmetic Abacus with Box Classic Antique Calculator Counting Collection Gift for Adult Children Made of high quality wooden materials, non-toxic and very durable The box used classic ancient pattern design, exquisite workmanship, classic and generous, full of China charm Conducive to cultivate and improve children's computing power, memory and attention With an English brochure to tell you how to use the abacus Material: wooden Size Chart: Box Size: Approx. 27 x 15 x 5cm / 10.6 x 5.9 x 1.96inch Abacus Size: Approx. 24.5 x 12 x 2 cm / 9.64 x 4.72 x 0.78 inch Package includes: 1 piece Abacus 1 piece Wooden box 1 piece Instruction