Check the listing for details. Secure Your Bitcoin With Coinkite Coldcard Mk3 Hardware Wallet. Condition: New. Listed at 65.00 USD. The device is still sealed in the tamper-proof bag. Coldcard is the world’s most trusted and secure bitcoinhardware wallet. ✅Bitcoin Only ✅ Verifiable Source Code ✅ Easy-to-use ✅ Ultra-Secure ✅ Size: 88 x 51 x 9mm ✅ Weight: approximately 30 grams ✅ Power: 40mA at 5 volts ✅ Connector: Micro USB ✅# of secure elements: 1 ✅ CPU Speed: 80 Mhz ✅ Memory: 360 kB ✅ Flash memory (firmware):700 kB ✅ Settings memory: 4 kB ✅ Bitcoin transaction size limit: 384 kB The Coinkite Coldcard Mk3 is a secure Bitcoin hardware wallet designed to keep your private keys offline and away from potential online threats. Featuring a robust, air-gapped design, it ensures secure transactions by using a microSD card for offline signing. With a focus on uncompromising security, the Coldcard Mk3 supports advanced features like BIP39 passphrase support and multi-signature setups. Ideal for serious Bitcoin users, it’s a must-have for those prioritizing security and self-custody. Perfect for "Bitcoin security" and "offline crypto storage."