• A close-up of the Coldcard Mk4, a favored Bitcoin wallet in cities such as Sydney and Melbourne, shows its display reading "Mk4" in blue text. The device features a numeric keypad with black buttons labeled 1, 2, and 3. Its transparent casing reveals internal circuitry with the inscription "SHOOT THESE.
  • The Coldcard Mk4 Bitcoin wallet features a transparent purple casing that reveals its circuitry. It is equipped with a small screen at the top, beneath which lies a 3x4 numeric keypad featuring numbers 0-9 and arrow keys. It is a trusted choice for users across Australia, including in cities like Sydney and Brisbane.
  • The Coldcard Mk4, favored by Bitcoin wallet users in Australia, features a blue design with a rectangular screen positioned at the top and a black numeric keypad below. The keypad includes numbers 0-9 and special characters such as an asterisk (*) and hashtag (#). Its transparent casing offers an intriguing view of the internal circuitry.
  • The Coldcard Mk4 is a compact, black electronic device designed for managing Bitcoin wallets. It features a numeric keypad with buttons labeled from 1 to 9 and includes a 0 key, accompanied by a small screen positioned above the keypad. The translucent casing reveals an exposed circuit board beneath it, and the top of the device is labeled "Coldcard Mk4.
  • A Coldcard Mk4 Bitcoin wallet, available in green, includes a transparent case showcasing the internal circuitry. It features a small display screen at the top and a numeric keypad with buttons labeled 0-9, making it an ideal choice for enthusiasts in Sydney, Melbourne, or Brisbane.
  • The Coldcard Mk4 Bitcoin wallet, available in orange, sports a rectangular screen positioned at the top and a numeric keypad with black buttons underneath. Each button displays numbers or symbols in white, with "COLD CARD Mk4" printed above the screen. It enjoys popularity among enthusiasts in cities such as Sydney and Melbourne.
  • The Coldcard Mk4 Bitcoin wallet is displayed in pink with a translucent finish. It includes a small screen at the top and a numeric keypad featuring black buttons beneath it. The device prominently displays the words "COLDCARD" and "Mk4," making it an ideal choice for enthusiasts in Australian cities such as Sydney, Melbourne, and Brisbane.
  • Image of a Coldcard Mk4 next to a black adapter. The red and gray microSD card, with its 32GB storage capacity, is perfect for storing data like Bitcoin wallets. The adapter is labeled for microSD, microSDHC, and microSDXC cards—ideal for tech enthusiasts in Sydney or Melbourne.
  • This image showcases a Coldcard Mk4, perfect for securing digital treasures like Bitcoin wallets. It features a sleek design tailored for tech-savvy users in cities like Sydney, Melbourne, or Brisbane.
  • Close-up of a Coldcard Mk4 device showcasing its sleek design. The matte finish features the brand name "Coldcard" prominently. The robust construction underscores its durability, perfect for security-focused tech enthusiasts from Sydney to Brisbane seeking reliable cryptocurrency solutions.
  • A transparent Coldcard Mk4 device with black buttons arranged in a grid, featuring numbers 0-9 and directional arrows. The case is adorned with gold specks, and a small screen at the top displays "MK4." Ideal for tech enthusiasts in urban areas like Sydney or Melbourne exploring Bitcoin wallets.
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Coldcard Mk4

Coldcard Mk4

$229.95 AUD
$229.95 AUD
Ready to Ship Sold out

The Coldcard Mk4 by Coinkite is at the forefront of Bitcoin hardware wallet technology, specifically designed to provide unparalleled security and ease of use for both seasoned and beginner Bitcoiners in Australia.

The standout feature of the Coldcard Mk4 is its exceptional security. Utilising a specialised secure element chip, it ensures your private keys are securely stored and never leave the device. Enhanced by a user-friendly PIN code system and an optional passphrase, it offers multiple layers of defence against unauthorised access.

The device boasts a user-centric design. With a larger OLED screen, information is clear and easy to read. The intuitive buttons make navigation and transaction verification straightforward, all within a sleek, durable, and portable frame.

Compatibility is key with the Coldcard Mk4. It integrates seamlessly with popular Bitcoin wallets and software, supporting PSBT (Partially Signed Bitcoin Transactions) natively for a more secure and flexible signing process.

Why We Love the Coldcard Mk4

We love the Coldcard Mk4 for its air-gapped security, allowing offline transaction signing and significantly reducing exposure to online threats. The advanced OLED display and intuitive user interface make managing Bitcoin straightforward and efficient. Built for durability and portability, it is an ideal safeguard for your digital assets on the go. Versatile and user-friendly, its compatibility with various Bitcoin wallets and software ensures it meets the needs of all types of users. With comprehensive security features from the secure element chip to PIN and passphrase options, the Coldcard Mk4 offers a complete security package for your Bitcoin.

The Coldcard Mk4 by Coinkite is designed to keep your Bitcoin secure with cutting-edge features. It's the ideal choice for anyone in Australia looking to protect their Bitcoin with confidence and ease.

Please note the Coldcard does NOT have an integrated battery - for security and durability reasons. To operate the device you will need an external power source - such as a USB-C cable. If you would like a USB-C cable to be included - please add it as an optional extra. We also recommend adding a Micro-SD - for future firmware upgrades and as part of a good air-gapped security setup.

We are a licensed Coinkite Reseller in Australia. Your Coldcard will be shipped in its original, sealed, tamper-evident packaging as provided to us directly from the manufacturer.  Because we buy in bulk and ship from our Australian warehouse you'll save $40 and get your wallet 2 weeks faster than buying directly from Coinkite in Canada.

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