KeepKey is the costliest Ethereum hardware wallet available for $120. It keeps your ETH in a secure offline environment and offers the same features as the Ledger Nano S or Trezor. KeepKey has a bigger screen and is bulky (i.e. not easy to carry around).

KeepKey�s plastic body makes it vulnerable to damage if it is accidentally dropped. If you like its interface, it may be the right wallet for you.