Specification:  Name: Ten Calculator Racks.  Product weight: 0.9KG.  Main Material: Wood.  Packaging size: 43.5*18.5*14.5CM.  Option: 10 Operations, 10 Digital Shapes.     Features:  - Details should not be overlooked.  Handicraft from an old carpenter.  Smooth treatment of multi-channel grinding process.  Soft corners do not hurt baby's hands.  - Environmentally friendly waterborne paint with soft gloss:  Water-based paint uses water as solvent.  Bright colour paint film is smooth.  It's a little guard for the baby to play safely.  - Wisdom and fun are boundless:  Practice basic arithmetic by plucking beads and adding and subtracting arithmetic questions.  At the same time, the same number of hands and mouth exercises.  Let the baby learn in the process of playing.     Package Included:  A Set of Abacus Computing Frame 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.