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BitBox02 Nova, Ledger Flex 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 and Ledger Flex.

BitBox02 NovaMultiple cryptocurrencies

Price at BitBox

Choose this edition at the store.

Ledger FlexOne edition

Price at Ledger

BitBox02Multiple cryptocurrencies

Price at BitBox

Choose this edition at the store.

NovaMultiple cryptocurrencies

Flex

Approve transactions

Computer: BitBox02 Nova:
USBBitBoxApp · Bitcoin / Ethereum; Ledger Flex:
USBLedger Wallet · Bitcoin / Ethereum; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum
iPhone: BitBox02 Nova:
BluetoothBitBoxApp · Bitcoin / EthereumMust stay plugged in; Ledger Flex:
BluetoothLedger Wallet · Bitcoin / Ethereum; BitBox02:
Not supported
Android: BitBox02 Nova:
USBBitBoxApp · Bitcoin / EthereumPhone needs USB OTG; Ledger Flex:
USB · BluetoothLedger Wallet · Bitcoin / Ethereum; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum

Where they differ

Controls / Display: BitBox02 Nova:Touch sensorsDisplay: Display without touch input; Ledger Flex:Touchscreen; BitBox02:Touch sensorsDisplay: Display without touch input
Wallet recovery: BitBox02 Nova:microSD backup and recovery phrase; Ledger Flex:Recovery phrase; BitBox02:microSD backup and recovery phrase

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
All three

Not fully confirmed

Operating power: BitBox02 Nova:USB power; Ledger Flex:Not recorded; BitBox02:USB power
Battery: BitBox02 Nova:Not recorded; Ledger Flex:Rechargeable; BitBox02:Not recorded

Before you choose

Consider

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.

Ledger FlexiPhone connects by Bluetooth. Android connects by USB or Bluetooth. NFC does not replace USB or Bluetooth for ordinary transactions. Cryptocurrency support depends on the app.

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

Apps and requirements

Show detailsHide details

Connectivity

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.

Ledger Flex

Computer

Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux

iPhone

Ledger WalletBluetoothBitcoin / Ethereum

Android

Ledger WalletUSB · BluetoothBitcoin / Ethereum

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: 6 · Same: 1 · Not fully recorded: 15Show details (22)Hide details

BitBox02 NovaLedger FlexBitBox02

Display

Display type: BitBox02 Nova:OLED; Ledger Flex:E Ink; BitBox02:OLED
Resolution: BitBox02 Nova:128 × 64 px; Ledger Flex:480 × 600 px; BitBox02:128 × 64 px
Colour mode: BitBox02 Nova:Monochrome; Ledger Flex:Grayscale; BitBox02:Monochrome
Screen diagonal: BitBox02 Nova:Not recorded; Ledger Flex:2.8″; BitBox02:Not recorded
Shades of grey: BitBox02 Nova:Not recorded; Ledger Flex:16; BitBox02:Not recorded

Size and weight

Dimensions: BitBox02 Nova:54.5 × 25.4 × 9.6 mmDimensions as listed by the manufacturer · Includes the connector; Ledger Flex:78.4 × 56.5 × 7.7 mmDimensions as listed by the manufacturer; BitBox02:54.5 × 25.4 × 9.6 mmDimensions as listed by the manufacturer · Includes the connector
Device weight: BitBox02 Nova:13 g; Ledger Flex:57.5 g; BitBox02:12 g

Power and charging

Battery life: BitBox02 Nova:Not recorded; Ledger Flex:Up to 10 hrUsage conditions not stated; BitBox02:Not recorded
Charging methods: BitBox02 Nova:Not recorded; Ledger Flex:USB-C; BitBox02:Not recorded
Wireless charging: BitBox02 Nova:Not recorded; Ledger Flex:Not supported; BitBox02:Not recorded

Device connections

USB port: USB-CAll three
Memory card slot: BitBox02 Nova:microSD; Ledger Flex:Not recorded; BitBox02:microSD
Bluetooth version: BitBox02 Nova:Not recorded; Ledger Flex:5.2; BitBox02:Not recorded
NFC functions: BitBox02 Nova:Not recorded; Ledger Flex:Ledger Recovery Key · Ledger Security Key; BitBox02:Not recorded

Security and software

Security chip: BitBox02 Nova:OPTIGA Trust M V3; Ledger Flex:ST33K1M5 · CC EAL6+; BitBox02:ATECC608B
Device software: BitBox02 Nova:Not recorded; Ledger Flex:Ledger OS; BitBox02:Not recorded

Processor

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

Key dates

Announced: BitBox02 Nova:June 20, 2025; Ledger Flex:Not recorded; BitBox02:Not recorded
Released: BitBox02 Nova:Not recorded; Ledger Flex:July 26, 2024; BitBox02:Not recorded
Available since: BitBox02 Nova:Not recorded; Ledger Flex:Not recorded; BitBox02:September 25, 2019