Coldcard MK4
COLDCARD Mk4 with upgraded secure elements, USB-C connector, new plastic, optional NFC, massive RAM for multisig, and much-much more.
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Coldcard / Coinkite
Coldcard Q
COLDCARD Q with QR scanner, 3xAAA battery support, dual SD cards, qwerty keyboard and huge new screen. Includes all Mk4 features.
Tapsigner
Wireless NFC smart-card that holds your Bitcoin private key (XPRV) and will sign transactions with a simple tap on your phone. Compatible with wall...
Opendime
From hand to hand. Opendime is Digital Cash in the truest sense of the word....
HardCase ColdCard Q
Water resistant Q Hardcase. Fits Q and 3 batteries, but could be snug with Q+Mk4 if inverting the Q position. Black plastic without any branding.
Coldcard MK5
What’s new in Mk5 NEW COLDCARD Mk5 with improved keyboard, bigger 1.54″ Gorilla Glass screen, better NFC, and full backward compatibility for easy...
