A cold cryptocurrency wallet is the safest and most secure way to store your cryptocurrency coins or private key away from an online exchange.
These hard wallets are small devices similar to USB drives in appearance and are also called hardware wallets and cold wallets.
Cryptocurrency wallets with bluetooth
Many crypto hardware wallets come with bluetooth connectivity function. If you’re looking at one of the most popular brands – the Ledger Nano, then one of the main differences between the Nano S and the Nano X is that the X has bluetooth, while the S does not.