Compare

Prokey Optimum 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 (Android) is confirmed only for Trezor Safe 3.

Prokey OptimumOne edition

Price at Prokey

Trezor Safe 3Multi-coin edition

Price at Trezor

Approve transactions

Computer: Prokey Optimum:
USBProkey Wallet · Bitcoin / Ethereum; Trezor Safe 3:
USBTrezor Suite · Bitcoin / Ethereum
iPhone: Prokey Optimum:
Support for signing is unconfirmed; Trezor Safe 3:
Not supported
Android: Prokey Optimum:
Support for signing is unconfirmed; Trezor Safe 3:
USBTrezor Suite · Bitcoin / EthereumAndroid 12+

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
Both
Wallet recovery: Recovery phrase
Both
Operating power: USB power
Both
Battery: No battery
Both

Not fully confirmed

Controls / Display: Prokey Optimum:Physical buttonsDisplay · Touchscreen: Not confirmed; Trezor Safe 3:Physical buttonsDisplay: Display without touch input

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.

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

Apps and requirements

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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.

Trezor Safe 3

Computer

Trezor SuiteUSBBitcoin / EthereumWindows · macOS · Linux

Android

Trezor SuiteUSBBitcoin / EthereumAndroid 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: 3 · Same: 2 · Not fully recorded: 7Show details (12)Hide details

Prokey OptimumTrezor Safe 3

Display

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

Size and weight

Dimensions: Prokey Optimum:50 × 41 × 9.4 mmDimensions as listed by the manufacturer; Trezor Safe 3:59 × 32 × 7.4 mmDimensions as listed by the manufacturer
Device weight: Prokey Optimum:16.7 g; Trezor Safe 3:14 g