Number of blocks: 5000 blocksDifficulty level: DifficultRecommended age: Over 12 years old Size: 105x181x0.2cmAdvantages: It can stimulate children's thinking and thinking ability. Improve hand-eye coordination; can help the elderly overcome loneliness and exercise brain memory; show people's patience, caution, attention, perseverancetalent: puzzles can be used as murals. It is a good choice to give to relatives and friends. Express your love to your friends; If there are missing or damaged parts, please don’t worry, please contact us via Amazon immediately