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Coinkite COLDCARD Mk5 or Trezor Safe 5?

The exact editions, side by side: how you’ll use them and the limits to know.

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In short

Transaction approval (iPhone) is confirmed only for Coinkite COLDCARD Mk5.

Coinkite COLDCARD Mk5One edition

Price at Coinkite

Trezor Safe 5Multiple cryptocurrencies

Price at Trezor

Approve transactions

Computer: Coinkite COLDCARD Mk5:
microSDSparrow · Bitcoin
USBSparrow · BitcoinMk5 set up and unlocked · verified current firmware · USB data enabled · data cable; Trezor Safe 5:
USBTrezor Suite · Bitcoin / Ethereum
iPhone: Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
iPhone · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; Trezor Safe 5:
Not supported
Android: Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
Android · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; Trezor Safe 5:
USBTrezor Suite · Bitcoin / Ethereum

Where they differ

Cryptocurrencies: Coinkite COLDCARD Mk5:Bitcoin-only; Trezor Safe 5:Multiple cryptocurrencies
Controls / Display: Coinkite COLDCARD Mk5:Physical buttonsDisplay: Display without touch input; Trezor Safe 5:Touchscreen

What they have in common

Wallet recovery: Recovery phrase
Both
Operating power: USB power
Both

Not fully confirmed

Battery: Coinkite COLDCARD Mk5:No battery; Trezor Safe 5:Not recorded

Before you choose

Consider

Coinkite COLDCARD Mk5Needs USB-C power during use. Check the current seed-generation advisory before reusing an older wallet; updating alone does not repair an affected seed.

Trezor Safe 5This model connects by USB; choose another model if you need to sign with an iPhone.

Apps and requirements

Show detailsHide details

Connectivity

Coinkite COLDCARD Mk5

Computer

SparrowmicroSDBitcoinWindows · macOS · Linux

Connection requirements

Sparrow exchanges unsigned and signed Bitcoin transaction files (PSBTs) with Mk5 through microSD. Your computer needs a compatible card reader.

SparrowUSBBitcoinWindows · macOS · LinuxMk5 set up and unlocked · verified current firmware · USB data enabled · data cable

Connection requirements

Start with a Mk5 already initialized under its setup guide, running the verified current recommended standard firmware. Keep Mk5 unlocked, enable USB data and use a data-capable USB-C cable. Then add its wallet to Sparrow and sign Bitcoin transactions over USB.

iPhone · Android

NunchukNFCBitcoinSupport for wallet setup is unconfirmed

Connection requirements

Use Nunchuk on a compatible NFC phone with an already initialized Mk5, powered on and with NFC enabled. Import the wallet’s public account into Nunchuk before exchanging Bitcoin transaction files (PSBTs).

Trezor Safe 5

Computer

Trezor SuiteUSBBitcoin / EthereumWindows · macOS · Linux

Android

Trezor SuiteUSBBitcoin / Ethereum

Hardware detailsDifferent: 1 · Same: 3 · Not fully recorded: 6Show details (10)Hide details

Coinkite COLDCARD Mk5Trezor Safe 5

Display

Display type: Coinkite COLDCARD Mk5:LCD; Trezor Safe 5:Not recorded
Screen diagonal: 1.54″Both
Colour mode: Coinkite COLDCARD Mk5:Monochrome; Trezor Safe 5:Colour
Resolution: Coinkite COLDCARD Mk5:Not recorded; Trezor Safe 5:240 × 240 px

Device connections

USB port: USB-CBoth
Memory card slot: microSDBoth

Size and weight

Dimensions: Coinkite COLDCARD Mk5:Not recorded; Trezor Safe 5:65.9 × 40 × 8 mmDimensions as listed by the manufacturer
Device weight: Coinkite COLDCARD Mk5:Not recorded; Trezor Safe 5:23 g