Compare

Prokey Optimum, 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 BitBox02 Nova.

Prokey OptimumOne edition

Price at Prokey

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.

Optimum

NovaMultiple cryptocurrencies

Approve transactions

Computer: Prokey Optimum:
USBProkey Wallet · Bitcoin / Ethereum; BitBox02 Nova:
USBBitBoxApp · Bitcoin / Ethereum; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum
iPhone: Prokey Optimum:
Support for signing is unconfirmed; BitBox02 Nova:
BluetoothBitBoxApp · Bitcoin / EthereumMust stay plugged in; BitBox02:
Not supported
Android: Prokey Optimum:
Support for signing is unconfirmed; BitBox02 Nova:
USBBitBoxApp · Bitcoin / EthereumPhone needs USB OTG; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum

Where they differ

Wallet recovery: Prokey Optimum:Recovery phrase; BitBox02 Nova:microSD backup and recovery phrase; BitBox02:microSD backup and recovery phrase

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
All three
Operating power: USB power
All three

Not fully confirmed

Controls / Display: Prokey Optimum:Physical buttonsDisplay · Touchscreen: Not confirmed; BitBox02 Nova:Touch sensorsDisplay: Display without touch input; BitBox02:Touch sensorsDisplay: Display without touch input
Battery: Prokey Optimum:No battery; BitBox02 Nova:Not recorded; BitBox02:Not recorded

Before you choose

Consider

Prokey OptimumInitial setup and firmware updates use Chrome on a computer. Recovery uses your 24 words on Prokey; a passphrase-protected wallet also needs its exact passphrase.

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

Prokey Optimum

Computer

Prokey WalletUSBBitcoin / EthereumWindows · macOS · Linux

Connection requirements

Use Google Chrome and allow USB access to Prokey Wallet. Install the device firmware there before first use. Linux may also need Prokey’s USB permissions rule. Check the payment on Prokey and hold OK to approve.

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: 2 · Same: 2 · Not fully recorded: 9Show details (13)Hide details

Prokey OptimumBitBox02 NovaBitBox02

Display

Display type: OLEDAll three
Resolution: Prokey Optimum:Not recorded; BitBox02 Nova:128 × 64 px; BitBox02:128 × 64 px
Colour mode: Prokey Optimum:Not recorded; BitBox02 Nova:Monochrome; BitBox02:Monochrome

Size and weight

Dimensions: Prokey Optimum:50 × 41 × 9.4 mmDimensions as listed by the manufacturer; 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: Prokey Optimum:16.7 g; BitBox02 Nova:13 g; BitBox02:12 g

Materials and finish

Materials: Prokey Optimum:Body: ABS; BitBox02 Nova:Not recorded; BitBox02:Not recorded

Device connections

USB port: USB-CAll three
Memory card slot: Prokey Optimum:Not recorded; BitBox02 Nova:microSD; BitBox02:microSD

Security and software

Security chip: Prokey Optimum:Not recorded; BitBox02 Nova:OPTIGA Trust M V3; BitBox02:ATECC608B

Processor

Core and clock speed: Prokey Optimum:Not recorded; BitBox02 Nova:Cortex-M4F · 120 MHz; BitBox02:Cortex-M4F · 120 MHz
Controllers: Prokey Optimum:Not recorded; BitBox02 Nova:ATSAMD51J20A · DA14531; BitBox02:ATSAMD51J20A

Key dates

Announced: Prokey Optimum:Not recorded; BitBox02 Nova:June 20, 2025; BitBox02:Not recorded
Available since: Prokey Optimum:Not recorded; BitBox02 Nova:Not recorded; BitBox02:September 25, 2019