USBOneKey app · BitcoinRecovery backup first · current app and firmware
✓
BluetoothOneKey app · Bitcoin
✓
QROneKey app · Bitcoin
Computer · OneKey app · Bluetooth · BitcoinSupport for wallet setup is unconfirmed
Computer · OneKey app · QR · BitcoinSupport for wallet setup is unconfirmed
Ledger Flex:
✓
USBLedger Wallet · Bitcoin / Ethereum
Set up the wallet
OneKey Pro:
✓
USBOneKey app · BitcoinRecovery backup first · current app and firmware
Ledger Flex:
✓
USBLedger Wallet · Bitcoin / Ethereum
Approve transactions
iPhone
OneKey Pro:
✓
BluetoothOneKey app · BitcoinRecovery backup first · current app and firmware
✓
QROneKey app · Bitcoin
iPhone · OneKey app · QR · BitcoinSupport for wallet setup is unconfirmed
Ledger Flex:
✓
BluetoothLedger Wallet · Bitcoin / Ethereum
Android
OneKey Pro:
✓
BluetoothOneKey app · BitcoinRecovery backup first · current app and firmware
✓
QROneKey app · Bitcoin
Android · OneKey app · QR · BitcoinSupport for wallet setup is unconfirmed
Ledger Flex:
✓
USB · BluetoothLedger Wallet · Bitcoin / Ethereum
Where they differ
Cryptocurrencies
OneKey Pro:Bitcoin-only
Ledger Flex:Multiple cryptocurrencies
What they have in common
Controls / Display
Touchscreen
Both
Wallet recovery
Recovery phrase
Both
Battery
Rechargeable
Both
Not fully confirmed
Operating power
OneKey Pro:Battery or USB power
Ledger Flex:Not recorded
Before you choose
Consider
OneKey ProQR support depends on the network and firmware. Do not assume every asset in OneKey App can use QR signing.
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
OneKey Pro
Computer
OneKey appUSBBitcoinWindows · macOS · LinuxRecovery backup first · current app and firmwareConnection requirements
Do not change firmware without the complete recovery backup and exact optional passphrase. For SLIP39 shares, keep your current firmware until OneKey confirms the mode-switch recovery procedure for that backup. Once recovery is ready, use the latest OneKey App and Pro firmware before switching to Bitcoin-only. The switch includes restoring the wallet.
OneKey appBluetoothBitcoinWindows · macOSSupport for wallet setup is unconfirmedConnection requirements
Use an initialized, unlocked Pro with current compatible OneKey desktop app and firmware for the selected mode. Turn AirGap Mode off. Enable Bluetooth on Pro, in the app and on your computer, with the required permissions. Disconnect USB: the cable takes priority. Initial setup is unconfirmed; Bitcoin-only firmware signs only Bitcoin.
OneKey appQRBitcoinWindows · macOS · LinuxSupport for wallet setup is unconfirmedConnection requirements
QR signing needs an initialized, unlocked Pro, compatible current app and firmware, and a working phone or computer camera with permission enabled. Support depends on the task and network; Bitcoin-only firmware signs only Bitcoin. Follow OneKey’s QR pairing and signing procedure.
iPhone · Android
OneKey appBluetoothBitcoinRecovery backup first · current app and firmwareConnection requirements
Do not change firmware without the complete recovery backup and exact optional passphrase. For SLIP39 shares, keep your current firmware until OneKey confirms the mode-switch recovery procedure for that backup. Once recovery is ready, use the latest OneKey App and Pro firmware before switching to Bitcoin-only. The switch includes restoring the wallet.
OneKey appQRBitcoinSupport for wallet setup is unconfirmedConnection requirements
QR signing needs an initialized, unlocked Pro, compatible current app and firmware, and a working phone or computer camera with permission enabled. Support depends on the task and network; Bitcoin-only firmware signs only Bitcoin. Follow OneKey’s QR pairing and signing procedure.
Ledger Flex
Computer
Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux
OneKey Pro:90.1 × 54.4 × 7.6 mmDimensions as listed by the manufacturer
Ledger Flex:78.4 × 56.5 × 7.7 mmDimensions as listed by the manufacturer
Device weight
OneKey Pro:65 g
Ledger Flex:57.5 g
Power and charging
Battery chemistry
OneKey Pro:Lithium-ion polymer
Ledger Flex:Not recorded
Battery capacity
OneKey Pro:530 mAh
Ledger Flex:Not recorded
Nominal voltage
OneKey Pro:3.8 V
Ledger Flex:Not recorded
Capacity after charge cycles
OneKey Pro:At least 500 charge cycles with at least 80% capacity remaining
Ledger Flex:Not recorded
Storage while switched off
OneKey Pro:Can still power on after approximately 7 months stored switched off, starting fully chargedTypical manufacturer laboratory results. Performance varies with temperature, usage, and self-discharge. For long-term storage, keep the device in a cool, dry place at 40–60% charge.
Ledger Flex:Not recorded
Compatible USB charging input
OneKey Pro:5 V / 2 A
Ledger Flex:Not recorded
Wireless charging power
OneKey Pro:2.5 W
Ledger Flex:Not recorded
Charging methods
OneKey Pro:USB-C · Compatible Qi charger
Ledger Flex:USB-C
Wireless charging
OneKey Pro:Qi2-compatible
Ledger Flex:Not supported
Battery life
OneKey Pro:Not recorded
Ledger Flex:Up to 10 hrUsage conditions not stated
