Originally introduced in 1939, View Master has been amazing children and adults for over 75 years. View Master's 3D images are as captivating as ever and this classic is sure to be around for another 75 years! Take a trip through Africa, swim with the fish or experience prehistoric life with each ViewMaster reel. This boxed set features 21 3D images and a reel storage case. Game Play Information:Number of players: 1 to 1 Age of Players: 3 to 99 YearsSkill level: BeginnerTime to Learn: 1 minutesTime to Play: 60 minutesProfanity: NoBatteries Included: Not RequiredBattery Details: Choking Hazard: NoAdditional Information:Publisher: Schylling Item ID: 014397020367 Product Dimensions: 6" x 9.5" Language: EnglishCountry of Origin: CN