Coldcard (MK4) vs. Keycard Shell

Which one is better in 2026? In-depth comparison of Coldcard (MK4) and Keycard Shell

Coldcard (MK4) and Keycard Shell are two popular hardware wallets with different costs, ease of use, and compatibility.

We've compared Coldcard (MK4) head-to-head with Keycard Shell to help you decide which is best for your needs.

	Select a product	Select a product
	Coldcard (MK4) ₹16,999 Save ₹6,000 1	Keycard Shell ₹12,999
Connectors	USB-C	USB-C
Wireless	NFC	NFC
Seed Phrase	BIP39	—
Release Year	2022	2025
Features	Air-gapped PSBT	QR Code
Works With	BTCPAY Bitcoin Core BlueWallet COLDCORE Casa Electrum Sparrow Wallet Specter Desktop Wasabi Wallet	BlueWallet MetaMask Rabby Sparrow Wallet Specter Desktop
Coins	Bitcoin (BTC)	Supports over 5000+ coins
Display Type	OLED	LCD
Display Resolution	128 x 64	—
Camera	—	Yes
Open Source	Yes	Yes
Certifications	—	CC EAL6+
Controllers	—	STM32H573
Secure Elements	ATECC608 DS28C36B	NXP JCOP4 P71