- Inner diameter: 3.93 inches (10 cm), total length: 7.87 inches (20 cm). Refer to the image for detailed measurements. - Made from polished stainless steel, this time capsule is highly resistant to corrosion, ensuring durability and longevity. Its robust construction provides high strength, exceptional tightness, and resistance to pressure, low and high temperatures, and aging. - Waterproof design: Equipped with silicone gaskets at both ends, the capsule is securely sealed to prevent moisture infiltration. For optimal waterproofing, tighten the screws diagonally. - Ideal for children: Encourage creativity by allowing kids to write notes to their future selves, fostering imagination and personal growth. Use Scenarios: 1. Family time capsule: Collect and preserve memories, notes, and mementos to be opened years later, creating a family tradition. 2. Educational projects: Use this capsule in schools to teach children about history and future predictions, enhancing learning experiences. 3. Gift idea: Perfect for birthdays or special occasions, allowing recipients to capture their thoughts and aspirations for the future. Take advantage of this high-quality time capsule to create lasting memories and inspire future generations.