Compare

Prokey Optimum or Ledger Flex?

The exact editions, side by side: how you’ll use them and the limits to know.

Ledger Flex

One edition

Wallet 2

Add a wallet

Wallet 3

Filters

Your device: iPhone

Prokey Optimum: This model does not match the current filters.

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In short

Transaction approval (iPhone) is confirmed only for Ledger Flex.

Prokey OptimumOne edition

Price at Prokey

Ledger FlexOne edition

Price at Ledger

iPhone

Your device

Approve transactions: Prokey Optimum:
Support for signing is unconfirmed; Ledger Flex:
BluetoothLedger Wallet · Bitcoin / Ethereum
Set up the wallet: Prokey Optimum:
Support for wallet setup is unconfirmed; Ledger Flex:
BluetoothLedger Wallet · Bitcoin / Ethereum

Approve transactions

Computer: Prokey Optimum:
USBProkey Wallet · Bitcoin / Ethereum; Ledger Flex:
USBLedger Wallet · Bitcoin / Ethereum
Android: Prokey Optimum:
Support for signing is unconfirmed; Ledger Flex:
USB · BluetoothLedger Wallet · Bitcoin / Ethereum

Where they differ

Battery: Prokey Optimum:No battery; Ledger Flex:Rechargeable

What they have in common

Cryptocurrencies: Multiple cryptocurrencies
Both
Wallet recovery: Recovery phrase
Both

Not fully confirmed

Controls / Display: Prokey Optimum:Physical buttonsDisplay · Touchscreen: Not confirmed; Ledger Flex:Touchscreen
Operating power: Prokey Optimum:USB power; Ledger Flex:Not recorded

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.

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.

Apps and requirements

Show detailsHide details

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.

Ledger Flex

iPhone

Ledger WalletBluetoothBitcoin / Ethereum

Computer

Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux

Android

Ledger WalletUSB · BluetoothBitcoin / Ethereum

Hardware detailsDifferent: 6 · Same: 1 · Not fully recorded: 11Show details (18)Hide details

Prokey OptimumLedger Flex

Display

Display type: Prokey Optimum:OLED; Ledger Flex:E Ink
Screen diagonal: Prokey Optimum:Not recorded; Ledger Flex:2.8″
Resolution: Prokey Optimum:Not recorded; Ledger Flex:480 × 600 px
Colour mode: Prokey Optimum:Not recorded; Ledger Flex:Grayscale
Shades of grey: Prokey Optimum:Not recorded; Ledger Flex:16

Size and weight

Dimensions: Prokey Optimum:50 × 41 × 9.4 mmDimensions as listed by the manufacturer; Ledger Flex:78.4 × 56.5 × 7.7 mmDimensions as listed by the manufacturer
Device weight: Prokey Optimum:16.7 g; Ledger Flex:57.5 g

Power and charging

Battery life: Prokey Optimum:No battery; Ledger Flex:Up to 10 hrUsage conditions not stated
Charging methods: Prokey Optimum:No battery; Ledger Flex:USB-C
Wireless charging: Prokey Optimum:No battery; Ledger Flex:Not supported

Materials and finish

Materials: Prokey Optimum:Body: ABS; Ledger Flex:Not recorded

Device connections

USB port: USB-CBoth
Bluetooth version: Prokey Optimum:Not recorded; Ledger Flex:5.2
NFC functions: Prokey Optimum:Not recorded; Ledger Flex:Ledger Recovery Key · Ledger Security Key