120-page spot-the-difference book to stimulate brain activity. Read only once. Will be shipped in an envelope as is! - Title: New Showa Retro Spot the Difference - Number of pages: 120 pages - Content: Spot the difference to stimulate brain activity - Problem format: Illustrated spot the difference - Difficulty: 8 questions - Time required: 30 seconds per question - Publisher: Mikasa Shobo - Target age: Adults Thank you for looking.