This is not financial advice. Cryptocurrency investments are volatile and you may lose your entire investment.
Trezor has a straightforward pitch: fully open source, auditable by anyone, with a 12-year track record in hardware wallet manufacturing. No proprietary security chips, no undisclosed firmware, no trust required in anything you can't verify yourself.
That pitch is genuine—and it comes with a real trade-off that most Trezor reviews don't address honestly.
We tested the Trezor Model One, Model T, and Safe 3 over six weeks, interacting with Trezor Suite, Electrum, MetaMask, and multiple DeFi frontends. Here is what we found.
Trezor Product Line in 2026
Trezor (made by SatoshiLabs, based in Prague) offers three current hardware wallet models:
Trezor Model One — $69
The original hardware wallet, first released in 2014. Small, lightweight, two physical buttons, a basic monochrome 128×64 pixel OLED display. USB-A connector (with adapter cable for USB-C).
- Coin support: 1,456 assets
- Security: STM32F205 microcontroller, no secure element
- Open source: Full hardware and firmware, publicly auditable
- Storage: MicroSD not supported
At $69, the Model One is the most affordable hardware wallet from a major manufacturer. In our testing, setup took 8 minutes. The two-button interface is functional but slower than touchscreen alternatives. Entering a PIN with two buttons (clicking left button for lower digit, right for higher, like a binary dial) is more tedious than it sounds for first-time users.
The limitation: Coin support stopped at 1,456 assets. If you hold Solana, Cardano, or other non-EVM assets, the Model One does not support them. For Bitcoin and most Ethereum-based tokens, it works fine.
Trezor Safe 3 — $79
The Safe 3 launched in late 2023 as the "secure element edition" of the Model One form factor. It adds an EAL6+ certified secure element chip (Microchip ATECC608A) to the Model One's architecture.
This is Trezor's concession that a secure element matters. However, the secure element in the Safe 3 is used only to protect the PIN and verify firmware authenticity—it does not store the seed phrase or private keys. The seed phrase still resides in the STM32 microcontroller's flash memory.
This is a partial improvement over the Model One, but it is not the same architecture as Ledger's secure element, which is used to protect the keys themselves.
- Coin support: Bitcoin, Ethereum, ERC-20 tokens, and others—similar to Model One
- Price: $79
- Form factor: Similar to Model One, USB-C
Trezor Model T — $219
The flagship device. Touchscreen display (240×240 pixels, capacitive), USB-C, microSD slot for optional encrypted storage, and a fully open-source design.
- Coin support: 2,000+ assets including Cardano, Monero, Ripple, and others not supported on Model One
- Security: STM32F429 microcontroller, no secure element on the main processor
- Open source: Full hardware and firmware
- MicroSD: Yes—can be used for encrypted backup (optional, experimental)
The Model T's touchscreen genuinely improves usability. Entering a PIN on a touchscreen is far faster than two-button navigation, and passphrase entry (typing your 25th word) is significantly less painful. For users who interact with their hardware wallet frequently, this matters.
At $219, the Model T faces strong competition. The Ledger Nano X at $149 has Bluetooth, broader coin support (5,500+), and a certified secure element—for less money. The Model T's price premium is justified primarily by Trezor's open-source philosophy, not by hardware superiority.
The Open Source Advantage: What It Actually Means
Trezor's firmware and hardware schematics are published on GitHub. Any security researcher can read the complete code. Security audits by third parties can verify the published code matches the device's behavior.
This matters in ways that aren't theoretical:
In 2023, when Ledger launched Recover, users discovered that Ledger's firmware could—via an update—extract and transmit seed phrase shards to external custodians. This was only possible because Ledger's firmware is partially closed source and the architecture was not publicly audited. Trezor's equivalent code is entirely public. Any capability to export keys would be immediately visible to anyone reading the firmware.
The security audit ecosystem: Trezor's open-source codebase has been examined by multiple independent security researchers. In 2019, Kraken Security Labs identified a vulnerability in both Model One and Model T that allowed seed extraction via voltage glitching under specific conditions. Trezor acknowledged the issue, noted it requires physical access and specialized equipment, and issued a passphrase recommendation as the mitigation.
That disclosure process is how security is supposed to work: researcher finds issue, manufacturer acknowledges it honestly, mitigation is available. Ledger's closed firmware makes this kind of community-driven security audit harder.
The Secure Element Trade-Off: The Real Risk
Here is what Trezor reviews often understate:
Without a secure element protecting the seed phrase storage, a sophisticated attacker with physical access to a Trezor device can potentially extract the seed phrase via hardware attacks.
The specific technique: voltage glitching (also called fault injection). By briefly disrupting the voltage supplied to the microcontroller at a precisely timed moment during the PIN verification process, an attacker can cause the processor to skip the PIN check and proceed to seed extraction. This has been demonstrated successfully by:
- Kraken Security Labs (2019) on Model One and Model T
- Hardware security researcher stacksmashing (2020, YouTube demonstration on Model One)
- Multiple academic research papers on embedded system security
The mitigating factor: A strong BIP39 passphrase (the "25th word") fully defeats this attack. The passphrase is not stored on the device—it is entered each time you use the wallet and combined with the seed to derive your keys. An attacker who extracts the seed from the device's flash memory only gets the 24-word seed, not the passphrase. Without the passphrase, the seed is useless.
This means: Trezor + strong passphrase is secure against physical attacks. Trezor without a passphrase is vulnerable to a sophisticated physical attacker.
In practice, most realistic attack scenarios don't involve laboratory voltage glitching equipment. A casual thief or burglar who steals your Trezor has no capability to perform this attack. The risk is real for high-profile targets (journalists in authoritarian countries, large crypto holders known to specific adversaries) but low for average users.
Trezor Suite: The Software Experience
Trezor Suite is the official desktop and web application for managing Trezor devices. Available for Windows, macOS, and Linux (desktop), plus a web version at suite.trezor.io.
In our testing on macOS Sonoma and Ubuntu 22.04, Trezor Suite performed consistently. No crashes over six weeks of intermittent use.
What Trezor Suite does well:
- Clean, functional interface
- Built-in privacy features: Tor routing for blockchain queries (enabled with one click)
- Bitcoin coin control: available under "Coins" > select address > "Selected Unspent Outputs"
- RBF (Replace by Fee) for stuck transactions
- Basic staking for ETH (via RocketPool), ADA, and SOL
- Transaction labels (synced locally, not to Trezor's servers)
Where it falls short:
- No native Lightning Network support
- Fewer supported DeFi integrations than Ledger Live
- Built-in swap feature uses third-party providers with noticeable markups (3–7% over spot in our tests—worse than most exchanges)
- The UI is visually dated compared to Ledger Live or hardware competitors like Foundation's Passport companion app
For Bitcoin-focused users, we recommend pairing Trezor with Electrum rather than Trezor Suite. Electrum gives you better coin control, fee estimation, and full transaction history management. For Ethereum and DeFi, pairing Trezor with MetaMask or Rabby Wallet via WalletConnect or USB works reliably—we had no connection failures in 18 test transactions.
Trezor vs Ledger: The Practical Comparison
This is the decision most hardware wallet buyers actually face.
| Trezor Model One | Trezor Safe 3 | Trezor Model T | Ledger Nano S Plus | Ledger Nano X | |
|---|---|---|---|---|---|
| Price | $69 | $79 | $219 | $79 | $149 |
| Secure Element | None | Partial (PIN/FW only) | None | CC EAL5+ | CC EAL5+ |
| Open Source | Full | Full | Full | Partial | Partial |
| Coin Support | 1,456 | ~1,500 | 2,000+ | 5,500+ | 5,500+ |
| Bluetooth | No | No | No | No | Yes |
| Passphrase Support | Yes | Yes | Yes | Yes | Yes |
Choose Trezor if:
- Full open-source auditability is important to your trust model
- You are comfortable using a strong passphrase (you should be anyway)
- You primarily hold Bitcoin and EVM-compatible assets
- You were uncomfortable with the Ledger Recover revelation and want firmware you can verify
Choose Ledger if:
- You hold assets across many chains (5,500+ Ledger vs 2,000+ Trezor Model T)
- You want Bluetooth for mobile use
- You prioritize the secure element's physical attack resistance over open-source auditability
- You hold non-EVM assets like Solana, Cardano, or Polkadot in significant amounts
Neither is definitively "better"—they embody different security philosophies with different trade-offs. Both are substantially safer than leaving funds on an exchange.
Our Verdict
Trezor Model One ($69): Best value hardware wallet for users who want open-source verification and hold primarily Bitcoin and Ethereum. Physical attack vulnerability is real but mitigated by passphrase.
Trezor Safe 3 ($79): A slight improvement over Model One for the same price range. The added secure element for PIN/firmware protection is meaningful, though it doesn't protect the seed itself.
Trezor Model T ($219): Hard to recommend at the current price. At $219, you're paying a premium over Ledger Nano X ($149) for a touchscreen and open source—while getting fewer supported coins and less physical attack resistance. Users who specifically need Cardano, Monero, or other non-EVM coins supported by Model T but not Ledger have a legitimate reason to choose it.
For the combination of price, security philosophy, and open-source trust model, the Trezor Safe 3 at $79 hits the best balance in the current Trezor lineup.
Rating: 4.0/5 — Open source is a genuine advantage, passphrase-protected setup is secure, but the no-secure-element trade-off is real and should inform your decision.
This is not financial advice. Cryptocurrency investments are volatile and you may lose your entire investment.