Crypto hardware wallet comparison Coldcard Mk4 vs CoolWallet Pro
Our impressions
Coldcard Mk4
CoolWallet Pro
Disclaimer: Our impressions are based on a compilation of factors tailored to the average user’s perspective. It is also important to note that whether a feature is a “pro” or “con” can depend on your situation and preferences. What may be an advantage in one scenario could be a challenge in another, and vice versa. Therefore, while reviewing these points, it’s essential to consider your unique requirements and circumstances when making decisions. This list aims to provide an idea of what to anticipate, but it is not the ultimate guide to determining whether something will work for you or not.
Key features
Coldcard Mk4
CoolWallet Pro
2022
2021
Supports only Bitcoin
Supports multiple coins
Supports over 30 main chains, including Bitcoin, Ethereum, Binance Smart Chain, Binance Chain, Polygon, Solana, Avalanche C-Chain, Arbitrum, Optimism, Tezos, Cardano, TRON, Aptos, Polkadot, Cosmos, Kusama, Cronos, Crypto.org, Bitcoin Cash, Ethereum Classic, XRP, Flare, Stellar, Litecoin, Horizen, Icon, Stellar, Kinesis Gold, Kinesis Silver, Terra, and Tether (OMNI)
In addition also supports over 12,000 custom tokens on several chains such as Ethereum and Binance Smart Chain
- Firmware
- Companion software
- Firmware
- Companion software
- BIP-39 (Mnemonic phrase)
- Passphrase
- BIP-39 (Mnemonic phrase)
- Proprietary method
Device does support the BIP-39 standard in the companion app. The proprietary CoolBitX mnemonic (seed phrases generated using the “on card” option) is based on BIP-39, but does not use the BIP-39 wordlist. Sample code that demonstrates seed and key generation is available in the CoolBitX Mnemonic Github repository.
- Secure element
- On device PIN entry
- Factory reset with wrong PIN
- Factory reset with decoy PIN
- Fake wallet with duress PIN
- On device passphrase entry
- On device recovery
Dual Secure Element
Multiple Trick PIN features
– Duress PIN
– Countdown to Brick (or Reset) PIN
– Brick Me PIN
– Login Countdown
On device recovery requires a previous SD Card backup or XPRV private key file on SD Card
- Secure element
CC EAL 6+
- Windows
- macOS
- Linux
- Android
- iOS
Technical specifications
Coldcard Mk4
CoolWallet Pro
88 mm x 52 mm x 10 mm
3.46 in x 2.05 in x 0.39 in
85.6 mm x 53.98 mm x 0.8 mm
3.37 in x 2.13 in x 0.03 in
30 g
1.06 oz
6 g
0.21 oz
- Monochrome
- OLED
128 x 64 pixels
- Monochrome
E-paper display
- USB-C
- NFC
- Bluetooth
- microSD card
120 MHz CPU
CE and RoHS
NCC- CCAF22LP0650T3 （model: CWS)
Plastics