Computer · OneKey app · Bluetooth · Bitcoin / EthereumSupport for wallet setup is unconfirmed
Ledger Flex:
✓
USBLedger Wallet · Bitcoin / Ethereum
iPhone
OneKey Classic 1S:
✓
BluetoothOneKey app · Bitcoin / Ethereum
Ledger Flex:
✓
BluetoothLedger Wallet · Bitcoin / Ethereum
Android
OneKey Classic 1S:
✓
BluetoothOneKey app · Bitcoin / Ethereum
Ledger Flex:
✓
USB · BluetoothLedger Wallet · Bitcoin / Ethereum
Where they differ
Controls / Display
OneKey Classic 1S:Physical buttonsDisplay: Display without touch input
Ledger Flex:Touchscreen
What they have in common
Cryptocurrencies
Multiple cryptocurrencies
Both
Wallet recovery
Recovery phrase
Both
Battery
Rechargeable
Both
Not fully confirmed
Operating power
OneKey Classic 1S:Battery or USB power
Ledger Flex:Not recorded
Before you choose
Consider
OneKey Classic 1SYou control this model with buttons. Compare OneKey Pro 2 for an AMOLED touchscreen, or OneKey Pro for a touchscreen and the option to switch the same device to Bitcoin-only firmware.
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
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Connectivity
OneKey Classic 1S
Computer
OneKey appUSBBitcoin / EthereumWindows · macOS · Linux
OneKey appBluetoothBitcoin / EthereumWindows · macOSSupport for wallet setup is unconfirmedConnection requirements
Use an initialized, unlocked Classic 1S with current compatible OneKey desktop app and firmware for the selected mode. Enable Bluetooth on the device, in the app and on your computer, with the required permissions. Disconnect USB: the cable takes priority. Initial setup over desktop Bluetooth is unconfirmed. Bitcoin-only firmware signs only Bitcoin; Ethereum needs general firmware.
iPhone · Android
OneKey appBluetoothBitcoin / Ethereum
Ledger Flex
Computer
Ledger WalletUSBBitcoin / EthereumWindows · macOS · Linux
OneKey Classic 1S:86 × 52 × 5.2 mmDimensions as listed by the manufacturer
Ledger Flex:78.4 × 56.5 × 7.7 mmDimensions as listed by the manufacturer
Device weight
OneKey Classic 1S:20.5 g
Ledger Flex:57.5 g
Power and charging
Battery chemistry
OneKey Classic 1S:Lithium-ion polymer
Ledger Flex:Not recorded
Battery capacity
OneKey Classic 1S:110 mAh
Ledger Flex:Not recorded
Nominal voltage
OneKey Classic 1S:3.7 V
Ledger Flex:Not recorded
Capacity after charge cycles
OneKey Classic 1S:At least 300 charge cycles with at least 80% capacity remaining
Ledger Flex:Not recorded
Storage while switched off
OneKey Classic 1S: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 Classic 1S:5 V / 2 A
Ledger Flex:Not recorded
Charging methods
USB-CBoth
Battery life
OneKey Classic 1S:Not recorded
Ledger Flex:Up to 10 hrUsage conditions not stated
