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Coldcard Q - digiwallets

Coldcard Q

R 5,999.00
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Coldcard Q Hardware Wallet

The most secure, fully air-gapped Bitcoin hardware wallet ever built.

The Coldcard Q is a next-generation Bitcoin hardware wallet designed for users who demand maximum security, transparency, and control over their private keys. Built by Coinkite, the Coldcard Q combines professional-grade security with powerful usability improvements including a large screen, full keyboard, QR scanning, and completely air-gapped transaction signing.

Unlike many wallets that rely on USB or Bluetooth connections, Coldcard Q allows you to sign transactions offline using microSD or QR codes, dramatically reducing attack surfaces. Every element of the device is designed to ensure your Bitcoin remains safe from malware, hackers, and supply-chain attacks.

Perfect for both advanced Bitcoiners and serious long-term investors, Coldcard Q provides institution-grade security in a portable self-custody device.

Why Choose Coldcard Q

  • Fully air-gapped operation – sign transactions offline using QR codes or microSD cards

  • Dedicated Bitcoin security architecture with dual secure elements

  • Large high-resolution screen for clear verification of addresses and transactions

  • Full QWERTY keyboard for faster PIN and passphrase entry

  • Open-source firmware and verifiable builds for complete transparency

  • Multiple hardware security layers protecting against tampering and physical attacks

  • Ideal for advanced users, multisig setups, and long-term cold storage

Coldcard Q is built specifically for Bitcoin self-custody, making it one of the most trusted wallets among security professionals and serious holders.

Advanced Security Architecture

Coldcard Q is engineered with multiple independent security layers to protect your Bitcoin from both remote and physical attacks.

Dual Secure Elements

  • Dedicated secure chips protect sensitive operations such as PIN verification and key storage.

True Air-Gap Signing

  • Transactions are signed using QR codes or microSD cards, meaning the wallet never needs to connect directly to an internet-connected device.

Anti-Tamper Design

  • Hardware protections detect manipulation attempts and prevent extraction of private keys.

Deterministic Firmware Builds

  • Firmware can be independently verified to ensure the device is running authentic software.

Brick-Me PIN Protection

  • Optional emergency PIN permanently disables the device if compromised.

Large Screen + Full Keyboard

Coldcard Q introduces major usability upgrades compared to earlier hardware wallets.

High-Resolution Display

  • Large screen makes it easy to verify addresses, amounts, and QR codes.

Full QWERTY Keyboard

  • Faster entry of PINs, passphrases, and menu navigation.

QR Code Scanner

  • Scan PSBT transactions directly from wallet software without cables.

Improved Menu System

  • Simplified interface designed for advanced wallet features.

These improvements make Coldcard Q significantly easier to use without sacrificing security.

Air-Gapped Bitcoin Transactions

Coldcard Q is designed to operate completely offline, removing the need for risky connections.

QR Workflow

  1. Create transaction on your computer or phone wallet

  2. Display QR code

  3. Scan with Coldcard Q

  4. Sign transaction securely

  5. Broadcast from your device

MicroSD Workflow

  • Export PSBT files to microSD

  • Sign offline

  • Import signed transaction for broadcasting

Both workflows ensure your private keys never touch an internet-connected device.

Bitcoin-Only Focus

Coldcard Q is intentionally designed for Bitcoin only, reducing complexity and eliminating attack vectors associated with multi-coin wallets.

Benefits include:

  • Smaller attack surface

  • Simpler firmware

  • Faster security auditing

  • Deep integration with Bitcoin wallets and multisig setups

Supported wallet integrations include:

  • Sparrow Wallet

  • Electrum

  • Specter Desktop

  • Nunchuk

  • Bitcoin Core

Key Features

  • Fully air-gapped Bitcoin hardware wallet

  • QR scanning for cable-free transaction signing

  • Large high-resolution display

  • Full QWERTY keyboard

  • Dual secure element chips

  • Open-source firmware

  • microSD card transaction support

  • Multisig compatible

  • Passphrase and advanced seed management

  • Brick-Me self-destruct security option

  • Tamper-resistant design

What’s in the Box

  • Coldcard Q Hardware Wallet

  • USB-C cable

  • microSD card

  • Quick start guide

  • Security instructions