Trezor Safe 3 vs Coldcard MK4
Key differences
- The Coldcard MK4 is Bitcoin-only with advanced air-gapped security, while the Safe 3 supports Bitcoin plus 1000+ tokens with simpler USB-based use.
- The Safe 3 is more affordable at $79, compared to Coldcard's $167.94 price tag.
- Coldcard uses a numeric keypad and dual secure elements, while the Safe 3 has a simpler OLED screen and a single EAL6+ chip with touchscreen passphrase entry.
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Price
$79
$167.94 USD
Launch
2023
2022
Screen Size
0.96" OLED (128x64 pixels)
128x64 pixel OLED display
Box Includes
- Safe 3 device
- USB-C cable
- backup cards
- guide
- stickers
- COLDCARD™ Mk4
Security Features
Passphrase Support
Passphrase Entry
Device or computer
Device
PIN Protection
Shamir Secret Sharing
Tor Support
Usage
Platforms
- Windows
- macOS
- Linux
- Android
- Windows
- macOS
- Linux
- Android
- iOS
Supported Coins
Bitcoin & 1000+ other coins and tokens
Bitcoin Only
Interfaces
USB-C, Buttons
Numeric Keypad, NFC-V, USB-C, AirGap SneakerNET, Virtual Disk, MicroSD Card
Technical Details
Secure Elements
EAL6+ certified secure chip
- Dual Secure Elements (ATECC608 & DS28C36B)
- AES-256-CTR encrypted storage
- COLDCARD Co-Signing (CCC)
Open Source
Hardware & Software
Firmware & Software
FIDO Authentication
Size
59x32x7.4 mm (2.3x1.3x0.3 in)
86x50x7.5 mm (3.39x1.97x0.3 in)
Weight
14g (0.5oz)
30g (1.1oz)
Bitcoin-Only Version
Integration & Multisig
Integrations
Company Details
Parent Company
SatoshiLabs
Coinkite
Parent Company Founded
2013
2011
Security Incidents
In March 2024, Ledger discovered a vulnerability in the microcontroller that could bypass firmware integrity checks. Trezor patched the issue, with no user funds compromised or action required.
No known security incidents
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