about this project Electronic Program: Up to 530 questions cater for players of varying proficiency. The teaching mode tells beginners how to play step by step. Challenge mode offers time-limited challenges for advanced players. Magnetic Design: The magnetic design provides a smooth touch when moving the blocks. Strong suction makes the blocks not easy to fall. Storage areas protect against block loss. VICTORY SENSING : It automatically senses the success of solving puzzles. The screen plays the salute special effect, and the speaker plays the victory sound effect. Brain Teasers: Daily puzzles help train thinking skills and finger mobility. Portable design allows players to take it with them when traveling. Rounded corners prevent cutting fingers. SAFE SLIDE PUZZLE GIFT: Made of high quality ABS plastic, safe for skin. SUMSYNC slide puzzles stimulate logical thinking and finger mobility. Slide puzzles make great gifts for boys and girls. 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. Sold by-YJL official store