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Blockstream Jade Classic, Block Bitkey or Ledger Flex?

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

Block BitkeyOne edition

Price at Block

Ledger FlexOne edition

Price at Ledger

Jade Classic

Bitkey

Approve transactions

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

Where they differ

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

What they have in common

Battery: Rechargeable
All three

Not fully confirmed

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

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

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

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.

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.

Ledger Flex

Computer

Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux

iPhone

Ledger WalletBluetoothBitcoin / Ethereum

Android

Ledger WalletUSB · BluetoothBitcoin / Ethereum

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

Blockstream Jade ClassicBlock BitkeyLedger Flex

Display

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

Size and weight

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

Power and charging

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

Materials and finish

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

Device connections

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

Security and software

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