Compare

Block Bitkey or Trezor Safe 3?

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 Block Bitkey.

Block BitkeyOne edition

Price at Block

Trezor Safe 3Bitcoin-only edition

Price at Trezor

Approve transactions

Computer: Block Bitkey:
Support for signing is unconfirmed; Trezor Safe 3:
USBTrezor Suite · Bitcoin
iPhone: Block Bitkey:
NFCBitkey app · Bitcoin; Trezor Safe 3:
Not supported
Android: Block Bitkey:
NFCBitkey app · Bitcoin; Trezor Safe 3:
USBTrezor Suite · BitcoinAndroid 12+

Where they differ

Controls / Display: Block Bitkey:Touchscreen; Trezor Safe 3:Physical buttonsDisplay: Display without touch input
Wallet recovery: Block Bitkey:Phone, hardware and server keys with assisted recovery. Check service and country availability.; Trezor Safe 3:Recovery phrase
Battery: Block Bitkey:Rechargeable; Trezor Safe 3:No battery

What they have in common

Cryptocurrencies: Bitcoin-only
Both

Not fully confirmed

Operating power: Block Bitkey:Not recorded; Trezor Safe 3:USB power

Before you choose

Consider

Block BitkeyTwo of three keys are needed. Recovery involves your phone, cloud storage and the service, rather than a conventional recovery phrase.

Trezor Safe 3USB signing on computer or Android; the iPhone app does not let this model approve transactions.

Apps and requirements

Show detailsHide details

Connectivity

Block Bitkey

iPhone · Android

Bitkey appNFCBitcoin

Connection requirements

Needs an NFC phone and the Bitkey app. Setup requires a cloud backup and email alerts; recovery depends on the keys and backup access you retain.

Trezor Safe 3

Computer

Trezor SuiteUSBBitcoinWindows · macOS · Linux

Android

Trezor SuiteUSBBitcoinAndroid 12+

Connection requirements

Setup and signing use the Trezor Suite app on Android 12 or later over USB. Your phone needs USB-C support and a suitable data cable. Check that Suite supports the asset and network you want to use; the Bitcoin-only edition is limited to Bitcoin.

Hardware detailsDifferent: 4 · Same: 2 · Not fully recorded: 7Show details (13)Hide details

Block BitkeyTrezor Safe 3

Display

Display type: OLEDBoth
Screen diagonal: Block Bitkey:Not recorded; Trezor Safe 3:0.96″
Resolution: Block Bitkey:Not recorded; Trezor Safe 3:128 × 64 px
Colour mode: Block Bitkey:Not recorded; Trezor Safe 3:Monochrome

Size and weight

Dimensions: Block Bitkey:66 × 60 × 13.6 mmDimensions as listed by the manufacturer; Trezor Safe 3:59 × 32 × 7.4 mmDimensions as listed by the manufacturer
Device weight: Block Bitkey:79 g; Trezor Safe 3:14 g