Coldcard MK5 - Bitcoin Hardware Wallet in Various Colors

COLDCARD MK5 by Coinkite is the new successor to the MK4 – the iconic Bitcoin-only hardware wallet with Dual-Secure-Elements (two multi-vendor chips) for 100% air-gapped signing, perfect for maximum BTC security and complex multisig setups.

Technical Performance & Features:

• 1.54-inch OLED display with Gorilla Glass for extreme durability and improved readability.
• Completely redesigned keypad with clear tactile feedback for secure PIN and menu navigation.
• USB-C at the bottom edge for ergonomic charging and connection, NFC-V compatible for fast, reliable PSBT, address and XPUB transfer via tap (deactivatable by default).
• Extensive internal memory (unlimited for BTC transactions) and 4MB USB Virtual Disk mode for PSBT and configuration files

Security Features & Bitcoin Self-Custody

• Dual-Secure-Element architecture (Microchip ATECC608 + Maxim DS28C36B) stores your 24-word seed completely offline and minimizes single-vendor risks.
• Trick PIN systems including Duress-PIN (false wallet), Countdown-to-Brick-PIN, Brick-Me-PIN, Login-Countdown, and Login-Anti-Phishing-Words for maximum protection and decryption scenarios.
• 100% air-gapped usage possible (MicroSD-Sneakernet, QR-Codes, NFC-PushTx), so private keys never touch an internet-connected device.
• Open, signed firmware with "Sleep Like a Baby Technology" and green/red Genuine-LED indicators against fake firmware and Evil-Maid attacks.

Compatibility & Software

• Runs the exact same firmware as the MK4, is 100% backward compatible, and receives all updates.
• Usable with Sparrow, Electrum, Nunchuk, Keystone, Specter, BlueWallet, etc. for multisig, air-gap, and full-node setups.
• Supports BIP39 passphrases, Temporary-Seed and Seed-Vault functions, and COLDCARD Co-Signing (CCC) for automated multisig policies.

Scope of Delivery

• COLDCARD MK5 in security blister or protective cover
• USB-C cable
• Note: Batteries and special backup media (e.g., SEEDPLATE) are offered separately and are not automatically included in the basic bundle.