- Seed cold storage is compatible with any 12 or 24-word BIP 39 recovery seed phrase,works with all hardware wallets including TREZOR, Ledger Nano S and KeepKey
- The Bitcoin Steel walllet is made of aviation aluminum alloy, and the surface is oxidized to form a thick aluminum oxide protective film, which is strong and durable. Alumina is very resistant to corrosion and high temperature (melting point is about 3700 °F)
- Crypto wallet comes with Anti-Tamper Seals you can seal the plates with stickers , then if someone opens the plates, you'll be able to tell someone has accessed your key
- Each seed plate 3.7inch*2.32inch*0.08inch. Each line(7mm/0.28inch) has enough room to carve any language.The numbers and lines on the plate are engraved with laser radium.
- We recommend 2.5mm,3mm or 4mm for punch kit and easy to use engraver to engrave your secret words( engrave & punch tool NOT included).