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Blockstream Jade Classic, Ledger Flex or Block Bitkey?

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

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In short

Transaction approval (Computer) is confirmed only for Blockstream Jade Classic and Ledger Flex.

Blockstream Jade ClassicOne edition

Price at Blockstream

Ledger FlexOne edition

Price at Ledger

Block BitkeyOne edition

Price at Block

Jade Classic

Flex

Approve transactions

Computer: Blockstream Jade Classic:
USBBlockstream app · Bitcoin
QRSparrow · BitcoinWebcam required for QR
Computer · Sparrow · QR · BitcoinSupport for wallet setup is unconfirmed; Ledger Flex:
USBLedger Wallet · Bitcoin / Ethereum; Block Bitkey:
Support for signing is unconfirmed
iPhone: Blockstream Jade Classic:
BluetoothBlockstream app · Bitcoin; Ledger Flex:
BluetoothLedger Wallet · Bitcoin / Ethereum; Block Bitkey:
NFCBitkey app · Bitcoin
Android: Blockstream Jade Classic:
USB · BluetoothBlockstream app · Bitcoin; Ledger Flex:
USB · BluetoothLedger Wallet · Bitcoin / Ethereum; Block Bitkey:
NFCBitkey app · Bitcoin

Where they differ

Controls / Display: Blockstream Jade Classic:Physical buttonsDisplay: Display without touch input; Ledger Flex:Touchscreen; Block Bitkey:Touchscreen
Wallet recovery: Blockstream Jade Classic:Recovery phrase; Ledger Flex:Recovery phrase; Block Bitkey:Phone, hardware and server keys with assisted recovery. Check service and country availability.

What they have in common

Battery: Rechargeable
All three

Not fully confirmed

Cryptocurrencies: Blockstream Jade Classic:Not confirmed; Ledger Flex:Multiple cryptocurrencies; Block Bitkey:Bitcoin-only
Operating power: Blockstream Jade Classic:Battery or USB power; Ledger Flex:Not recorded; Block Bitkey:Not recorded

Before you choose

Consider

Blockstream Jade ClassicA small screen with wheel and button controls. QR signing needs a compatible app; Liquid uses USB or Bluetooth.

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.

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

Apps and requirements

Show detailsHide details

Connectivity

Blockstream Jade Classic

Computer

Blockstream appUSBBitcoinWindows · macOS · Linux

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

SparrowQRBitcoinWindows · macOS · LinuxWebcam required for QRSupport for wallet setup is unconfirmed

Connection requirements

Prepare Jade QR mode and use a webcam with Sparrow. QR signing supports Bitcoin, not Liquid.

iPhone

Blockstream appBluetoothBitcoin

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

Android

Blockstream appUSB · BluetoothBitcoin

Connection requirements

This workflow uses Bitcoin mainnet in the Blockstream app. The standard firmware also supports Liquid, so it is not Bitcoin-only.

Ledger Flex

Computer

Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux

iPhone

Ledger WalletBluetoothBitcoin / Ethereum

Android

Ledger WalletUSB · BluetoothBitcoin / Ethereum

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.

Hardware detailsDifferent: 2 · Same: 2 · Not fully recorded: 16Show details (20)Hide details

Blockstream Jade ClassicLedger FlexBlock Bitkey

Display

Colour mode: Blockstream Jade Classic:Colour; Ledger Flex:Grayscale; Block Bitkey:Not recorded
Display type: Blockstream Jade Classic:Not recorded; Ledger Flex:E Ink; Block Bitkey:OLED
Screen diagonal: Blockstream Jade Classic:Not recorded; Ledger Flex:2.8″; Block Bitkey:Not recorded
Resolution: Blockstream Jade Classic:Not recorded; Ledger Flex:480 × 600 px; Block Bitkey:Not recorded
Shades of grey: Blockstream Jade Classic:Not recorded; Ledger Flex:16; Block Bitkey:Not recorded

Size and weight

Dimensions: Blockstream Jade Classic:60 × 24 × 17 mmDimensions as listed by the manufacturer; Ledger Flex:78.4 × 56.5 × 7.7 mmDimensions as listed by the manufacturer; Block Bitkey:66 × 60 × 13.6 mmDimensions as listed by the manufacturer
Device weight: Blockstream Jade Classic:21 g; Ledger Flex:57.5 g; Block Bitkey:79 g

Power and charging

Battery capacity: Blockstream Jade Classic:240 mAh; Ledger Flex:Not recorded; Block Bitkey:Not recorded
Charging methods: USB-CAll three
Battery life: Blockstream Jade Classic:Not recorded; Ledger Flex:Up to 10 hrUsage conditions not stated; Block Bitkey:Not recorded
Wireless charging: Blockstream Jade Classic:Not recorded; Ledger Flex:Not supported; Block Bitkey:Not recorded

Materials and finish

Materials: Blockstream Jade Classic:Body: Plastic; Ledger Flex:Not recorded; Block Bitkey:Corian Solid Surface

Device connections

USB port: USB-CAll three
Bluetooth version: Blockstream Jade Classic:Not recorded; Ledger Flex:5.2; Block Bitkey:Not recorded
NFC functions: Blockstream Jade Classic:Not recorded; Ledger Flex:Ledger Recovery Key · Ledger Security Key; Block Bitkey:Not recorded

Security and software

Security chip: Blockstream Jade Classic:No Secure Element; Ledger Flex:ST33K1M5 · CC EAL6+; Block Bitkey:Not recorded
Device software: Blockstream Jade Classic:Not recorded; Ledger Flex:Ledger OS; Block Bitkey:Not recorded