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Coinkite COLDCARD Mk5, BitBox02 Nova or BitBox02?

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 and BitBox02 Nova.

Coinkite COLDCARD Mk5One edition

Price at Coinkite

BitBox02 NovaMulti-coin edition

Price at BitBox

Choose this edition at the store.

BitBox02Multi-coin edition

Price at BitBox

Choose this edition at the store.

COLDCARD Mk5

NovaMultiple cryptocurrencies

Approve transactions

Computer: Coinkite COLDCARD Mk5:
microSDSparrow · Bitcoin
USBSparrow · BitcoinMk5 set up and unlocked · verified current firmware · USB data enabled · data cable; BitBox02 Nova:
USBBitBoxApp · Bitcoin / Ethereum; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum
iPhone: Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
iPhone · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; BitBox02 Nova:
BluetoothBitBoxApp · Bitcoin / EthereumMust stay plugged in; BitBox02:
Not supported
Android: Coinkite COLDCARD Mk5:
NFCNunchuk · Bitcoin
Android · Nunchuk · NFC · BitcoinSupport for wallet setup is unconfirmed; BitBox02 Nova:
USBBitBoxApp · Bitcoin / EthereumPhone needs USB OTG; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum

Where they differ

Cryptocurrencies: Coinkite COLDCARD Mk5:Bitcoin-only; BitBox02 Nova:Multiple cryptocurrencies; BitBox02:Multiple cryptocurrencies
Controls / Display: Coinkite COLDCARD Mk5:Physical buttonsDisplay: Display without touch input; BitBox02 Nova:Touch sensorsDisplay: Display without touch input; BitBox02:Touch sensorsDisplay: Display without touch input
Wallet recovery: Coinkite COLDCARD Mk5:Recovery phrase; BitBox02 Nova:microSD backup and recovery phrase; BitBox02:microSD backup and recovery phrase

What they have in common

Operating power: USB power
All three

Not fully confirmed

Battery: Coinkite COLDCARD Mk5:No battery; BitBox02 Nova:Not recorded; BitBox02: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.

BitBox02 NovaOn iPhone and iPad, Bluetooth carries the data but the wallet still needs a physical power connection. You control it by touching its edges, not the screen. BitBoxApp on iPhone and iPad guides firmware updates when a compatible version is offered.

BitBox02This model cannot sign with an iPhone. BitBox02 Nova is a different model with iPhone support.

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).

BitBox02 Nova

Computer

BitBoxAppUSBBitcoin / EthereumWindows · macOS · Linux

Connection requirements

Ethereum requires the Multi edition. A Bitcoin-only hardware edition cannot be converted to Multi.

iPhone

BitBoxAppBluetoothBitcoin / EthereumMust stay plugged in

Connection requirements

With an iPhone, plug BitBox02 Nova into the phone or another suitable power source. It uses Bluetooth to exchange data. Ethereum needs the Multi edition; the Bitcoin-only edition cannot be changed to Multi.

Android

BitBoxAppUSBBitcoin / EthereumPhone needs USB OTG

Connection requirements

Your Android phone needs USB OTG support to connect to Nova over USB. Ethereum requires the Multi edition; a Bitcoin-only device cannot be changed to Multi.

BitBox02

Computer

BitBoxAppUSBBitcoin / EthereumWindows · macOS · Linux

Connection requirements

Ethereum requires the Multi edition. A Bitcoin-only hardware edition cannot be converted to Multi.

Android

BitBoxAppUSBBitcoin / Ethereum

Connection requirements

Ethereum requires the Multi edition. A Bitcoin-only hardware edition cannot be converted to Multi.

Hardware detailsDifferent: 1 · Same: 3 · Not fully recorded: 9Show details (13)Hide details

Coinkite COLDCARD Mk5BitBox02 NovaBitBox02

Display

Display type: Coinkite COLDCARD Mk5:LCD; BitBox02 Nova:OLED; BitBox02:OLED
Screen diagonal: Coinkite COLDCARD Mk5:1.54″; BitBox02 Nova:Not recorded; BitBox02:Not recorded
Colour mode: MonochromeAll three
Resolution: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:128 × 64 px; BitBox02:128 × 64 px

Device connections

USB port: USB-CAll three
Memory card slot: microSDAll three

Size and weight

Dimensions: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:54.5 × 25.4 × 9.6 mmDimensions as listed by the manufacturer · Includes the connector; BitBox02:54.5 × 25.4 × 9.6 mmDimensions as listed by the manufacturer · Includes the connector
Device weight: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:13 g; BitBox02:12 g

Security and software

Security chip: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:OPTIGA Trust M V3; BitBox02:ATECC608B

Processor

Core and clock speed: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:Cortex-M4F · 120 MHz; BitBox02:Cortex-M4F · 120 MHz
Controllers: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:ATSAMD51J20A · DA14531; BitBox02:ATSAMD51J20A

Key dates

Announced: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:June 20, 2025; BitBox02:Not recorded
Available since: Coinkite COLDCARD Mk5:Not recorded; BitBox02 Nova:Not recorded; BitBox02:September 25, 2019