Known best as Trezor, Trezor One was developed in the year 2014 as a hardware wallet. It provided an offline storage (cold storage) for cryptotokens, meaning it canbot easily be stolen. It is a physical wwallet that can be held. Trezor One supports ranges of cryptocurrencies from bitcoin down to any ERC20 based tokens. It allows its users to customize their transaction fees, but you should know that the higher the transaction fees set, the higher the probabilty of your transaction to be confirmed, as most importance is accorded to the transaction with the fees. Trezor One poses as an easy to use wallet as it is presented with a great device design. Trezor One as a wallet doesn't joke with its security as it comes wth a Tamper Proof design to prevent it from being broken or even hacked. It is not connected to the internet, hence it's insusceptibility to hacking. As a beginner, dealing with Trezor One seems complicated if one doesn't read the manual and instructions. Trezor has two types: Trezor One and Trezor Model T. It is a very convenient wallet to use.