Coldcard Q — Coinkite’s Flagship Bitcoin Signing Device

Description

The Coldcard Q is Coinkite’s flagship hardware wallet — built for Bitcoiners who demand the best. Full QWERTY keyboard, built-in QR scanner, 2.3″ screen, and runs on AAA batteries for true air-gapped operation.

Why Coldcard Q?

• Full QWERTY keyboard — Fast PIN entry, easy passphrase input
• Built-in QR scanner — No cables required for PSBT signing
• Dual secure elements — Microchip ATECC608 + Maxim DS28C36B
• Battery powered — 3x AAA, no USB connection needed
• Dual MicroSD slots — Backup and signing flexibility
• 2.3″ 320×240 LCD screen — See everything clearly

Security That Sets the Standard:

• Bitcoin-only firmware — No altcoin attack surface
• Duress PIN — Unlock a decoy wallet under coercion
• Brick Me PIN — Destroy the device if compromised
• Countdown PIN — Delay login to prevent quick access
• Open-source firmware — Verify the code yourself
• Tamper-evident packaging — Numbered bag, recorded in device

Connectivity Options:

• QR codes — Fully air-gapped signing
• MicroSD — Sneakernet PSBTs
• USB-C — When you need it (75mA at 5V)
• NFC — Tap to sign (optional)

What’s Included:

• Coldcard Q device
• Quick start card
• Tamper-evident numbered bag

Note: Batteries and USB cable not included.

For Bitcoiners who accept no compromises.