Cryptosteel Capsule is the premier backup tool for autonomous offline storage of valuable data without any third-party involvement. The solid metal device, designed to survive extreme conditions, works under nearly all circumstances. It is compatible with most secret sharing and key generation algorithms.

Cryptosteel Capsule Duo


When it comes to the security of your sensitive data, redundancy is a positive.

Take your autonomy into your own hands and back-up your backup.

The Capsule can store important information in up to 123 characters. Autonomous. Personal. Anonymous. Tangible.

You can store 24 abbreviated words of your seed phrase in the Capsule.

Product specifications

  • Capsule container dimensions: length 102 mm, diameter 16 mm
  • Solid metal construction – 100% stainless steel
  • Shell made of AISI 303
  • Core, separators, fasteners and character tiles made of AISI 304
  • Packaging includes all printable ASCII characters (96 different characters)

Package specifications

  • Weight: 740 g / 1.6 lb
  • Dimensions: 253 x 181 x 25 mm / 10 x 7,1 x 1 in
  • Contents:
    • 2 x Cryptosteel Capsule container
    • 1 x Randomized 1300+ tile set