Features and Specifications
TREZOR HARDWARE BITCOIN SAFE - The original hardware wallet.
No matter how unprotected your computer or internet connection might be, your coins always stay safe with TREZOR as it never exposes your private keys. TREZOR is an isolated environment for offline transaction signing and using a small display you can visually verify the transaction contents. That's why all operations using TREZOR are entirely safe.
Your TREZOR is protected by a PIN code, which can be up to 9 digits between 1 and 9. There are 6561 possible 4 digit PINs for the TREZOR. If you choose a good PIN, it will take hundreds of thousands of guesses to guess your PIN. Each time you enter a wrong PIN, the wait time increases by a power of 2. After the first few failures, you have to wait several seconds before you’ll be able to try another PIN. Even just trying t he top 20 pins would take about 6 days( 150 hours). Trying 30 PINs would take around 17 years. Trying 100 random PINs would take a VERY LONG time.
Easy to use
TREZOR is Windows, OS X and Linux friendly . All you need to do is to connect your TREZOR to the computer and follow the instructions. There are only two buttons, to confirm or to deny the action, so using TREZOR is as easy and as intuitive as it can be. Users can backup the whole TREZOR contents on a small piece of paper and use this backup to regain access to all their coins in case of disaster, loss or theft.
TREZOR uses state of the art cryptographic algorithms and practices, but you don't have to read long manuals or to be a crypto-expert in order to use them properly.
Community driven open-source
TREZOR code is open-source and technical decisions are discussed with the wider developer community. Everything can be audited by an independent third party. This ensures that TREZOR is absolutely transparent and backdoor free.
Trezor currently supports Bitcoin, Ethereum (+ all ERC-20 tokens), Ethereum Classic, ZCash, Litecoin, Namecoin, Dogecoin, Dash, and Bitcoin Testnet.
60 x 30 x 6 mm (2.4 x 1.2 x 0.2 in)
12 g (0.42 oz )
Micro USB connector for connecting to the computer or mobile phone.
Safety and certifications
The TREZOR is CE and RoHS certified, so it meets all quality, reliability and environmental standards. Its fine to take your TREZOR with you on the airplane. Like all modern electronics, the X-Rays won't hurt it.
-20°C to +60°C (-4°F - +140°F)
120 MHz embedded ARM processor (Cortex M3) running a custom developed system.
Bright OLED - 128x64 pixels . big and bright enough to show clearly the entire payment address.
Trezor Wallet (The Bitcoin Safe)
Micro USB Cable
Recovery seed booklet
Trezor user guide
Frequently Asked Questions
When you store your Bitcoins in a traditional web wallet you put your Bitcoins at risk of being stolen, lost, or confiscated. Here is a list of ways people have lost their Bitcoins through use of a traditional web wallet:
- User’s computer is hacked and web wallet password is stolen
- Web wallet server gets hacked and bitcoins are stolen
- Web wallet company goes bankrupt
- FBI or other enforcement agency confiscates coins
- Web wallet provider points to ToS violation and takes coins
- Owners of web wallet company run away with coins
- Bug in web wallet software leads to loss of coins
- Your computer or cell phone is stolen while you are logged in and thieves then steal your coins
If you keep your Bitcoins in a TREZOR, none of these things can happen...
A desktop Bitcoin client?
If you keep your Bitcoins on your computer, when your computer is hacked or stolen your Bitcoins can be stolen.
Your mobile phone?
There are a number of programs that will allow you to send bitcoins from your mobile phones. Some are simply mobile interfaces to web wallets and suffer from the same flaws. Some are the same as desktop clients and can suffer from malware or theft.
A USB flash drive?
A USB flash drive is just storage for private keys. It means that when you want to make a transaction, you must attach your drive to the computer and let your bitcoin software read the keys from the device. At this point, your private keys are accessible to viruses and malware, just as to any other software on your desktop computer.
On the contrary, TREZOR is a single-purpose computer, which stores your private keys and actively signs transactions without sending your private keys to the computer. When you want to make a bitcoin transaction, your bitcoin software just sends a transaction template to the TREZOR device and asks for a digital signature. TREZOR shows the requested amount and target address on its display. You will then confirm the transaction by pressing the hardware button. TREZOR will sign transaction internally and send the digital signature back to the computer, without leaking your private keys. Thanks to this, you can use TREZOR even on a vulnerable or hacked computer.
An encrypted wallet?
Even using a strong password doesn’t prevent viruses to silently sit on your computer and wait until you want to transfer coins out of your wallet. This is a vulnerable point because a virus has access to the wallet file and can read your passphrase from your keyboard.
On the contrary, TREZOR never sends private keys to the computer, because when you want to send some coins out of your wallet, TREZOR asks bitcoin software for payment details, signs the transaction internally and then sends back just a digital signature of the transaction. There’s no point where malware on your computer could access the private keys or send away your coins without your permission.
There is a significant difference between the two. The Yubikey is a device, which helps the service to verify that it is actually you who is signing the transaction. However, it does not protect you against signing a different transaction than you intend to.
A paper backup of my keys?
A paper backup is a quite safe method to protect bitcoins, but you still need to load private keys from paper using a trusted computer to send your coins to somebody else.
Is TREZOR heat & cold resistant, waterproof?
Yes, but we advise you not to expose TREZOR to temperatures lower than -20°C or higher than +60°C (-4F +140F). The device is NOT waterproof.
Is it safe to get TREZOR through the airport check?
Yes, TREZOR is just as any other type of common electronics, so no harm should be done by X-raying it .
Can I plug TREZOR into USB 3.0 (blue) port?
TREZOR is USB 2.0 compatible device. Therefore it will also work properly when plugged into USB 3.0 as they are back compatible.
Is it possible to flash the device?
Yes, it is. Devices sold by us have a USB bootloader that allows firmware flashing. Upon start, the firmware signature is checked and if it does not match ours a warning is issued. The user can continue at his own risk after pressing the button. This small inconvenience is to increase the security of the end users.
What are a recovery seed, a PIN and encryption passphrase and the difference between them?
Recovery seed is a mnemonic code made of 12, 18 or 24 words depending on your choice. This seed is generated the first time you run TREZOR and will help you recovering it’s contents (private keys, bitcoin balance, and transaction history) into a new device if you lose your TREZOR.
PIN is a number that you set when you first run TREZOR. It protects TREZOR against being used by unauthorized persons. We have invented a secure way of entering the PIN so it can’t be keylogged and misused.
Encryption passphrase can be set on top of the PIN. This protects the device in case of a seizure. It’s using military-grade encryption of the seed on TREZOR storage, so even torturing the device in a laboratory won’t leak your private keys.
What happens if my TREZOR gets stolen?
- Can the thieves take all my coins?
- Is there some way to recover my account once I get a new TREZOR?
The short answers:
- No. Each TREZOR has a PIN code to prevent misuse in case of a physical theft.
- Yes, if you lose your TREZOR or if your TREZOR somehow gets destroyed you may have to recover your accounts. So long as your recovery card is intact your bitcoins are safe and sound.
Is it safe to enter the PIN on my computer and not on the TREZOR itself?
TREZOR doesn’t have a keyboard but even if you enter the PIN on the computer directly, you’re perfectly safe. TREZOR’s PIN mechanism is protected against key-loggers, so using it even in internet cafes means no risk for you.
Why should I do a paper backup of my seed?
We think paper backups are the easiest and safest way of storing such information for a common computer user. Computer backups, on the contrary, are vulnerable to hardware damage and subject to frequent hacker attacks.
If somebody steals my TREZOR, they’ll just empty out my wallet before I have the chance to restore anyway. Right?
Not at all. All operations on TREZOR require the user to enter a PIN . The attacker would have to guess your PIN, which is very difficult because with each badly entered PIN the time for entering it anew increases exponentially. For example, the delay between 19th and 20th PIN entering is 35 hours. Unplugging and plugging the device won’t help. The thief would have to sit his life off entering the PINs. Meanwhile, you have enough time to move your funds into a new device or wallet from the paper backup.
What if my computer that runs my bitcoin wallet is stolen?
If your computer gets stolen, just plug your TREZOR to another computer and you’ll get your account balance and transaction history. Might your TREZOR get lost as well, simply recover the seed from your paper backup to a new TREZOR device or a TREZOR compatible wallet software.
What happens if my recovery seed is stolen?
You need to keep your recovery seed safe from theft. If your recovery seed is stolen and you haven’t set a passphrase protection, then your bitcoins can be stolen as well. However, if you like, TREZOR can protect against recovery seed theft with a passphrase, and therefore eliminate this risk.
What happens if the SatoshiLabs servers are hacked and the firmware signing key is stolen?
First off, this won’t happen ;). The SatoshiLabs master key is kept very safe. However, you don’t need to rely on the SatoshiLabs signature. You can verify the build yourself. Our hope is that a few trusted TREZOR users will make a habit of verifying firmware checksums. If you are concerned about this, we suggest making a habit of checking our blog or social news channels such as reddit before applying any updates. If there ever was a problem with the firmware not matching the source code, you can be sure someone will have written about it.
You don’t need to worry about the firmware being updated by a computer virus. Your TREZOR will ask you to manually confirm the update before anything is written to the TREZOR’s memory.
What happens if the SatoshiLabs shuts down?
There are no such plans because we love bitcoin , but even if we had to close down, there’s nothing to worry about. You can use your TREZOR together with other BIP32, BIP39 and BIP44 compatible wallets. Since our code is opensource , developers from around the world can maintain it and add new functionalities.