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BitBox02, Ledger Flex or BitBox02 Nova?

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 Ledger Flex and BitBox02 Nova.

BitBox02Multiple cryptocurrencies

Price at BitBox

Choose this edition at the store.

Ledger FlexOne edition

Price at Ledger

BitBox02 NovaMultiple cryptocurrencies

Price at BitBox

Choose this edition at the store.

BitBox02Multiple cryptocurrencies

Flex

Approve transactions

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

Where they differ

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

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
All three

Not fully confirmed

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

Before you choose

Consider

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

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.

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.

Apps and requirements

Show detailsHide details

Connectivity

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.

Ledger Flex

Computer

Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux

iPhone

Ledger WalletBluetoothBitcoin / Ethereum

Android

Ledger WalletUSB · BluetoothBitcoin / Ethereum

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.

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

BitBox02Ledger FlexBitBox02 Nova

Display

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

Size and weight

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

Power and charging

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

Device connections

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

Security and software

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

Processor

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

Key dates

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