Coldcard Wallet MK3

Description

The Coldcard Mk3 is a special hardware wallet just for Bitcoin. It’s made by Coinkite, a well-known company from Canada that cares a lot about online privacy and security. Many experienced Bitcoin users like it because it’s very secure, can work completely on its own, and its software is open for everyone to see.

BitcoinVN Shop is an official seller of Coinkite products. This means the Coldcard Mk3 wallet you get is real and hasn’t been touched by anyone else.

Features of Coldcard Mk3

Very safe with special hardware

• Your secret keys are stored in a special secure chip that’s made to stop people from taking the data.
• The system is completely separate: The software on the Coldcard is put on in a safe place, so bad software from the outside can’t get in.
• Supports PSBT (Partially Signed Bitcoin Transaction): You can sign transactions completely offline using a microSD card without needing a USB connection.

Works completely offline (Air-gapped)

It’s the only hardware wallet that lets you use it without ever connecting to a computer. This includes setting it up, making backups, and signing transactions. This keeps your money safer from bad software on computers.

Open source

All the software on the Coldcard is open source. This means you can check it yourself, make sure it’s safe, or even build the software yourself if you want. It’s made by people who really care about Bitcoin, so keeping your money private and in your control is the most important thing.

Easy and flexible backups

It uses a standard way called BIP39, so you can easily back up your wallet with 12 or 24 words by writing them down. Also, it can make different accounts and payment addresses, so you can manage your money in more ways. You can also back up your whole wallet and signed transactions on an encrypted microSD card, making it safe and easy to get your money back if you need to.

Small and easy to use

The screen is easy to understand, and it shows you clearly what you’re doing so you can make sure your transactions are right before you sign them.

Coldcard Mk3 specification

Specification
Size	88 x 51 x 9 mm
Weight	About 30 grams
Power	40mA at 5V
Connections	MicroUSB and MicroSD card slot
3D Model	Unofficial 3D model STPSTP by @TiKawamoto

What’s in the box when you get Coldcard Mk3? 

Unlike many other crypto hardware wallets, the Coldcard doesn’t come in a fancy box. Instead, it comes in a simple bag that shows if it has been opened, with a red security sticker.

Inside the bag, you’ll find:

• 1 Coldcard Mk3 wallet
• 1 backup card to write down your wallet words
• 1 Coldcard sticker

Note: You’ll need to get your own micro USB cable and microSD card if you want to use all the features of the device.

Good things about buying Coldcard Mk3 at BitcoinVN Shop

• Authentic product: We get it directly from Coinkite in Canada. It’s sealed and good quality.
• Fast shipping: We ship all over the country in 2-5 days, and on the same day in Ho Chi Minh City.
• Clear return policy: If there’s a problem with the device within 12 months, we’ll exchange it.
• Check before you pay: You can feel safe because you can check the product before you pay (cash on delivery).
• Easy payments: You can pay with Momo, bank transfer, or when you receive it.

Free security advice: You get 1 hour of free help from BitcoinVN experts to set up your wallet, learn how to use it, and get security tips.

Buy now at BitcoinVN Shop!