Time Capsule Anti-Corrosion Waterproof Stainless Steel Capsule Container Durable Lock Container for Future Graduation Gift (7.3 Inch)

Inside Diameter: 3.4inch(8.6cm) / Total Length: 7.3inch(18.5cm). Please see specific in the picture. We also have a phone size comparison for reference. Anti-Corrosion: Actual Stainless Steel, which can withstands most exterior condition and last for 200 years. No worry about the lifespan. Waterproof: Silicone gaskets at both ends makes the capsule seals nicely, which will keep all moisture out. (To get best waterproof effect, please tighten bolts diagonally) Package: As list in the picture. Include one pair of gloves, two silicone gaskets and all accessories needed for assemble this time capsule Best future gift. Kids can write to themselve s as seniors and then bury in the ground.