Trezor’s Safe 7 represents a significant redesign of the company’s hardware-wallet lineup, combining an open-source approach with a more polished, smartphone-like device. According to Bitcoin Magazine, the wallet aims to serve both Bitcoin-focused users and people who want support for multiple cryptocurrencies, while introducing new trade-offs around wireless connectivity, battery use and physical security.
One device, two firmware choices
The Safe 7 is available with either Trezor’s standard multi-coin firmware or a Bitcoin-only version. The multi-coin model is offered in black and green, while the Bitcoin-only version is orange. The choice is not permanent: users can switch between the two firmware types regardless of the device’s color.
The Bitcoin-only software is designed to be leaner. Trezor says it receives fewer updates than the universal firmware because it does not include changes related to other cryptocurrencies. The company also says this can reduce exposure to bugs or security problems connected with features that a Bitcoin-only user does not need.
The physical design is a major departure from older Trezor models such as the Model T and Trezor One. The Safe 7 has a metal exterior, a wide screen extending toward the device’s edges and larger on-screen buttons. Its tactile feedback, lights and vibration are designed to make important actions—such as approving a transaction or changing a PIN—more deliberate.
A user presses and holds a digital button to confirm an action. The device vibrates progressively, green lights move around the screen and the display frame illuminates when the process is complete. The larger buttons also aim to reduce mistyped PINs, which can have serious consequences on hardware wallets.
A different approach to backup words
The Safe 7 uses a 20-word backup format rather than the 12- or 24-word formats more commonly associated with hardware wallets. The system, known as SLIP-39, was introduced by Trezor in 2019 alongside its Shamir backup feature.
Shamir backup allows a wallet owner to divide recovery information into multiple shares and set a threshold for recovery. In a two-of-three arrangement, for example, three separate 20-word lists can be stored in different locations, while any two are required to restore the wallet. A single share cannot recover the wallet on its own, meaning the loss or theft of one share does not automatically compromise the funds.
Trezor says the 20-word format does not provide more entropy than a 12-word seed and still represents 128 bits of entropy. The company says the SLIP-39 word list was selected to reduce confusion between similar words. The format also allows a user who initially creates a single 20-word backup to later create Shamir shares for the same wallet without moving funds through an on-chain transaction.
That flexibility comes with an important operational consideration: the original 20-word backup remains capable of restoring the wallet. Anyone adopting a share-based arrangement would therefore need to consider how and where the original backup is kept. SLIP-39 is also supported by wallets including Sparrow and Electrum, although it is less widely adopted than BIP-39.
Wireless convenience and security trade-offs
The Safe 7 is the first Trezor model described in the review to include both an internal battery and Bluetooth. It can also be connected through USB-C, with Bluetooth disabled in the device settings. The battery supports Qi2 wireless charging, removing the need for a cable during some uses.
These features make the wallet more convenient, but they also complicate the traditional idea of cold storage. Bluetooth introduces a wireless communication layer, while a battery adds a component that can eventually fail. Trezor says it selected a LiFePO₄ battery because its chemistry is more stable and safer than that of common lithium-ion batteries, and that swelling is extremely unlikely.
Trezor says its Host Protocol encrypts data in transit over both Bluetooth and USB-C. The company does not rely on the cable or Bluetooth connection to carry unencrypted data. Even so, the review places the Safe 7 closer to a high-security warm wallet than to a strictly air-gapped device.
The wallet includes a “Wipe PIN” that deletes user data when entered at login. The review questions how useful the feature is in a forced-access situation because its operation may be obvious to an attacker. A more advanced implementation could open a decoy wallet instead, but that is not how the Safe 7 feature is described.
Entropy, delivery risks and the market picture
The Safe 7 combines four entropy sources when creating a wallet: entropy from the host computer or phone, a hardware random-number generator in an STM32 microcontroller, the Optiga secure element and Trezor’s TROPIC01 secure element. The firmware handling this process is GPL 3 open source.
Users cannot currently add dice-generated entropy directly when creating a wallet, although a passphrase can be added to existing accounts. Trezor executives told Bitcoin Magazine that user-generated entropy has been discussed, but that asking the broader user base to roll dice could add complexity for limited security benefit when machine-generated entropy is used correctly.
The review also highlights a privacy issue surrounding delivery. A breach at Trezor’s shipping partner, ShipMonk, compromised 67,000 U.S. customer records earlier in the month, including records that Trezor said should have been deleted. Trezor is developing an anonymous-delivery service, expected to launch in the European Union within weeks and expand to the United States afterward. Public information still showed ShipMonk as the company’s shipping provider.
Moneyiar market data recorded at 22:04 on September 25, 2026, put Bitcoin at $83,820.0482, down 0.61% over 24 hours but up 3.20% over seven days. The Safe token was $0.1143931426, rising 1.53% in 24 hours and 14.08% over seven days. Walrus stood at $0.0370371029, up 8.43% daily and 21.41% weekly, while aelf was $0.0629443859, down 16.25% over 24 hours and up 2.66% over seven days.
Overall, the Safe 7 is presented as a substantial evolution of Trezor’s hardware: more polished and easier to use, while retaining open-source principles and advanced backup options. Its battery and Bluetooth broaden its appeal but mean that users must weigh convenience against the stricter isolation associated with traditional cold storage.
