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Tangem Ring, 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 Tangem Ring and BitBox02 Nova.

Tangem RingOne edition

Price at Tangem

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.

Tangem Ring

NovaMultiple cryptocurrencies

Approve transactions

Computer: Tangem Ring:
Support for signing is unconfirmed; BitBox02 Nova:
USBBitBoxApp · Bitcoin / Ethereum; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum
iPhone: Tangem Ring:
NFCTangem app · Bitcoin / Ethereum; BitBox02 Nova:
BluetoothBitBoxApp · Bitcoin / EthereumMust stay plugged in; BitBox02:
Not supported
Android: Tangem Ring:
NFCTangem app · Bitcoin / Ethereum; BitBox02 Nova:
USBBitBoxApp · Bitcoin / EthereumPhone needs USB OTG; BitBox02:
USBBitBoxApp · Bitcoin / Ethereum

Where they differ

Controls / Display: Tangem Ring:No controls on the walletDisplay: No device display; BitBox02 Nova:Touch sensorsDisplay: Display without touch input; BitBox02:Touch sensorsDisplay: Display without touch input
Wallet recovery: Tangem Ring:Backup cards; BitBox02 Nova:microSD backup and recovery phrase; BitBox02:microSD backup and recovery phrase
Operating power: Tangem Ring:Powered by NFC; BitBox02 Nova:USB power; BitBox02:USB power

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
All three

Not fully confirmed

Battery: Tangem Ring:No battery; BitBox02 Nova:Not recorded; BitBox02:Not recorded

Before you choose

Consider

Tangem RingTake the ring off to scan. You review payments on the phone; Ring has no independent screen. Choose seedless or phrase backup during setup.

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

Tangem Ring

iPhone · Android

Tangem appNFCBitcoin / Ethereum

Connection requirements

You need a compatible NFC phone and supported versions of its operating system and wallet app. You check the transaction details on the phone.

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: 4 · Same: 0 · Not fully recorded: 10Show details (14)Hide details

Tangem RingBitBox02 NovaBitBox02

Size and weight

Device weight: Tangem Ring:Not confirmed; BitBox02 Nova:13 g; BitBox02:12 g
Dimensions: Tangem Ring: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

Materials and finish

Materials: Tangem Ring:Casing: Zirconia ceramic; BitBox02 Nova:Not recorded; BitBox02:Not recorded

Security and software

Security chip: Tangem Ring:CC EAL6+; BitBox02 Nova:OPTIGA Trust M V3; BitBox02:ATECC608B

Protection

Dust and water protection: Tangem Ring:IP69K; BitBox02 Nova:Not recorded; BitBox02:Not recorded

Display

Display type: Tangem Ring:No built-in display; BitBox02 Nova:OLED; BitBox02:OLED
Resolution: Tangem Ring:No built-in display; BitBox02 Nova:128 × 64 px; BitBox02:128 × 64 px
Colour mode: Tangem Ring:No built-in display; BitBox02 Nova:Monochrome; BitBox02:Monochrome

Device connections

USB port: Tangem Ring:Not recorded; BitBox02 Nova:USB-C; BitBox02:USB-C
Memory card slot: Tangem Ring:Not recorded; BitBox02 Nova:microSD; BitBox02:microSD

Processor

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

Key dates

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