{"id":717,"date":"2020-07-21T07:32:36","date_gmt":"2020-07-21T00:32:36","guid":{"rendered":"https:\/\/shop.bitcoinvn.io\/?post_type=product&#038;p=717"},"modified":"2025-08-21T09:54:28","modified_gmt":"2025-08-21T02:54:28","slug":"coldcard-mk3","status":"publish","type":"product","link":"https:\/\/bitcoinvn.io\/shop\/product\/coldcard-mk3\/","title":{"rendered":"Coldcard Wallet MK3"},"content":{"rendered":"<p><i><span style=\"font-weight: 400;\">The <a href=\"https:\/\/bitcoinvn.io\/shop\/product\/coldcard-mk3\/\" target=\"_blank\" rel=\"noopener\">Coldcard Mk3<\/a> is a special hardware wallet just for Bitcoin. It&#8217;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&#8217;s very secure, can work completely on its own, and its software is open for everyone to see.<\/span><\/i><\/p>\n<p><i><span style=\"font-weight: 400;\">BitcoinVN Shop is an official seller of Coinkite products. This means the Coldcard Mk3 wallet you get is real and hasn&#8217;t been touched by anyone else.<\/span><\/i><\/p>\n<h2><b>Features of Coldcard Mk3<\/b><\/h2>\n<h3><b>Very safe with special hardware<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Your secret keys are stored in a special secure chip that&#8217;s made to stop people from taking the data.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The system is completely separate: The software on the Coldcard is put on in a safe place, so bad software from the outside can&#8217;t get in.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Supports PSBT (Partially Signed Bitcoin Transaction): You can sign transactions completely offline using a microSD card without needing a USB connection.<\/span><\/li>\n<\/ul>\n<h3><b>Works completely offline (Air-gapped)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">It&#8217;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.<\/span><\/p>\n<h3><b>Open source<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">All the software on the Coldcard is open source. This means you can check it yourself, make sure it&#8217;s safe, or even build the software yourself if you want. It&#8217;s made by people who really care about Bitcoin, so keeping your money private and in your control is the most important thing.<\/span><\/p>\n<h3><b>Easy and flexible backups<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">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.<\/span><\/p>\n<h3><b>Small and easy to use<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The screen is easy to understand, and it shows you clearly what you&#8217;re doing so you can make sure your transactions are right before you sign them.<\/span><\/p>\n<h2><b>Coldcard Mk3 specification<\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\"><b>Specification<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Size<\/b><\/td>\n<td><span style=\"font-weight: 400;\">88 x 51 x 9 mm<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Weight<\/b><\/td>\n<td><span style=\"font-weight: 400;\">About 30 grams<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Power<\/b><\/td>\n<td><span style=\"font-weight: 400;\">40mA at 5V<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Connections<\/b><\/td>\n<td><span style=\"font-weight: 400;\">MicroUSB and MicroSD card slot<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>3D Model<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Unofficial 3D model STPSTP by @TiKawamoto<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b>What&#8217;s in the box when you get Coldcard Mk3?<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Unlike many other crypto hardware wallets, the Coldcard doesn&#8217;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.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Inside the bag, you&#8217;ll find:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1 Coldcard Mk3 wallet<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1 backup card to write down your wallet words<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">1 Coldcard sticker<\/span><\/li>\n<\/ul>\n<p><i><span style=\"font-weight: 400;\">Note: You&#8217;ll need to get your own micro USB cable and microSD card if you want to use all the features of the device.<\/span><\/i><\/p>\n<figure id=\"attachment_7060\" aria-describedby=\"caption-attachment-7060\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-7060 size-full\" src=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2020\/07\/coldcard-mk3-1.jpg\" alt=\"Coldcard Mk3 full package\" width=\"800\" height=\"600\" srcset=\"https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2020\/07\/coldcard-mk3-1.jpg 800w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2020\/07\/coldcard-mk3-1-300x225.jpg 300w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2020\/07\/coldcard-mk3-1-768x576.jpg 768w, https:\/\/bitcoinvn.io\/shop\/wp-content\/uploads\/2020\/07\/coldcard-mk3-1-600x450.jpg 600w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-7060\" class=\"wp-caption-text\">Coldcard Mk3 full package<\/figcaption><\/figure>\n<h2><b>Good things about buying Coldcard Mk3 at BitcoinVN Shop<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Authentic product:<\/b><span style=\"font-weight: 400;\"> We get it directly from Coinkite in Canada. It&#8217;s sealed and good quality.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Fast shipping:<\/b><span style=\"font-weight: 400;\"> We ship all over the country in 2-5 days, and on the same day in Ho Chi Minh City.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Clear return policy:<\/b><span style=\"font-weight: 400;\"> If there&#8217;s a problem with the device within 12 months, we&#8217;ll exchange it.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Check before you pay:<\/b><span style=\"font-weight: 400;\"> You can feel safe because you can check the product before you pay (cash on delivery).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Easy payments:<\/b><span style=\"font-weight: 400;\"> You can pay with Momo, bank transfer, or when you receive it.<\/span><\/li>\n<\/ul>\n<p><b>Free security advice:<\/b><span style=\"font-weight: 400;\"> You get 1 hour of free help from BitcoinVN experts to set up your wallet, learn how to use it, and get security tips.<\/span><\/p>\n<p style=\"text-align: center;\">Buy now at BitcoinVN Shop!<\/p>\n","protected":false},"excerpt":{"rendered":"<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Bitcoin-only:<\/strong> Made to be very safe for Bitcoin users. It doesn&#8217;t work with other coins.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Completely Air-gapped:<\/strong> You can make and sign transactions completely offline using a microSD card. You don&#8217;t need to connect it to a computer.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Secure Element:<\/strong> Your secret keys are kept in a special secure chip. This helps protect against someone physically trying to steal them.<\/span><\/li>\n<\/ul>\n<hr \/>\n<p><strong>BitcoinVN Shop is official importer and reseller of Coinkite in Vietnam.<\/strong><\/p>\n<p>Living abroad? Purchase straight from <a href=\"https:\/\/store.coinkite.com\/promo\/4E790E123AB1EA5ECAAB\" target=\"_blank\" rel=\"noopener\">Coinkite store<\/a><\/p>\n","protected":false},"featured_media":5609,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[16,142],"product_tag":[],"class_list":{"0":"post-717","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-hardware-wallets","7":"product_cat-coinkite","9":"first","10":"instock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Coldcard MK3 cold wallet, affordable price, high security - BitcoinVN Shop<\/title>\n<meta name=\"description\" content=\"Purchase the Coldcard MK3 cold wallet for Bitcoin at an affordable price and receive 1 hour of free security consultation. 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