Trezor, a brand from the Czech company SatoshiLabs, built the first commercially available hardware wallet back in 2014 and has consistently made full transparency its main differentiator ever since. The current entry-level model, the Trezor Safe 3, replaced the older Model One and Model T, introducing a certified secure element while keeping the fully open approach to software. The companion app is Trezor Suite — available as a desktop app or in the browser — through which you manage accounts, send and receive funds, set up Shamir Backup, or run CoinJoin for extra privacy on Bitcoin transactions.
Security and open source
Trezor's biggest edge over the competition is that its entire technology stack — firmware, bootloader, and hardware schematics — is publicly available and can be independently verified by the community and security auditors. You don't have to take the manufacturer's word for how private keys are stored and signed; you can check it in the source code. That sets Trezor apart from Ledger, whose secure element firmware stays closed due to the chip supplier's confidentiality requirements. The Safe 3 model introduced a dedicated, certified Secure Element (EAL6+), protecting against physical attacks aimed at extracting keys from the chip — earlier models, which relied solely on a standard microcontroller, were theoretically more exposed on this front, though no successful attacks of this kind have been recorded at scale. Trezor has never offered Bluetooth on any model — communication is always via USB-C. That's a deliberate trade-off: less convenience in exchange for no radio attack surface, a philosophy similar to the fully air-gapped SafePal S1 or Ellipal Titan, though those go a step further by eliminating even USB.
Supported coins
Trezor Suite natively supports over a dozen major networks — Bitcoin, Ethereum, Cardano, Litecoin, Dogecoin, XRP, Bitcoin Cash, Solana, Polygon, BNB Smart Chain, Arbitrum, Base, and Optimism — and in total, including tokens covered through integrations with standards like ERC-20, the manufacturer states support for more than 8,000 assets.
Price and variants
The Trezor Safe 3 is the entry-level model, priced close to the Ledger Nano S Plus, and offers the best transparency-to-price ratio in its segment. The premium Safe 7 model adds extra features while sticking to the same open-source philosophy.
Who it's for
A natural choice for anyone who values independently verifiable security over broad DeFi/NFT integration from a phone. A good pick for simple, transparent cold storage rather than daily active trading.
Trezor Details
- Rating: 4.7/5
- Type: Hardware wallet
- Price: $79
- Supported coins: ~8,000
- Open source: Yes
- Bluetooth: No
- Official site: trezor.io