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- Pro 3 vs Zero
ColdLar Pro 3 vs NGRAVE Zero
What Pro 3 does better (2) and where Zero wins (0) — every spec side by side.
Why is Pro 3 better than Zero?
- Thickness8.6 mm vs 14 mm+63%
- Weight163 g vs 180 g+10%
Why is Zero better than Pro 3?
Zero has no measurable advantages in this pair.
Specifications
Side by side
| Security | ||
| Secure Element chip | — | Yes |
| Secure Element certification | — | EAL5+ |
| Air-gapped signing | — | Yes |
| 100% air-gapped | — | No |
| Supply-chain & tamper protection | — | Yes |
| Secure boot | — | Yes |
| Anti-klepto (anti-exfil) signing | — | No |
| Firmware & open source | ||
| Open-source firmware | No | No |
| Source code available | No | No |
| Reproducible builds | — | No |
| Upgradable firmware | — | Yes |
| Firmware update via | — | USB |
| Bitcoin-only firmware / edition | — | No |
| Device lock | ||
| PIN lock | — | Yes |
| PIN entered on the device | — | Yes |
| Fingerprint unlock | — | Yes |
| Duress PIN / decoy wallet | — | No |
| Brick / wipe PIN | — | No |
| Wipe after failed attempts | — | Yes |
| Time-delayed unlock | — | No |
| Anti-phishing words | — | No |
| Keys & backup | ||
| BIP39 passphrase | — | Yes |
| Shamir backup (SLIP-39) | — | No |
| Seed XOR | — | No |
| BIP85 child seeds | — | No |
| 24-word seed | — | Yes |
| SeedQR backup | — | No |
| microSD backup | — | No |
| NFC backup card | — | No |
| User-added entropy (dice) | — | Yes |
| Stateless use (no stored keys) | — | No |
| Multiple seeds on one device | — | No |
| Bitcoin features | ||
| Multisig | — | Yes |
| Taproot | — | No |
| Miniscript | — | No |
| Message signing | — | No |
| Coin control | — | No |
| Own node connection | — | No |
| Tor support | — | No |
| Replace-by-fee | — | No |
| Silent Payments | — | No |
| Spending limits | — | No |
| Testnet | — | No |
| Supported assets | ||
| Altcoins & tokens | — | Yes |
| Bitcoin only | — | No |
| Connectivity | ||
| Signing connectivity | — | QR code |
| USB | — | No |
| USB-C | — | Yes |
| Bluetooth | — | No |
| NFC | — | No |
| QR code camera | — | Yes |
| Animated QR (UR) | — | No |
| microSD signing | — | No |
| Screen & input | ||
| Screen | — | Yes |
| Screen size | — | 4″ |
| Screen type | — | LCD |
| Screen resolution | — | 400 × 800 |
| Touchscreen | — | Yes |
| Colour screen | — | Yes |
| Gorilla Glass | — | No |
| Controls | — | Touch Screen |
| QWERTY keyboard | — | Yes |
| Battery & power | ||
| Built-in battery | — | Yes |
| Battery capacity | — | 1,200 mAh |
| Removable battery | — | No |
| Wireless charging | — | No |
| Design | ||
| Weight | 163 g | 180 g |
| Length | 120 mm | 125 mm |
| Width | 63 mm | 70 mm |
| Thickness | 8.6 mm | 14 mm |
| Materials | — | Alloy of metals |
| Water / dust resistance | — | Yes |
| IP rating | — | IP55 |
| Several colours available | — | No |
| Warranty (months) | — | 24 |
| Assembled in | — | Belgium |
| DIY build possible | — | No |
| Apps | ||
| Official apps | — | Android, iOS |
| Desktop app | — | No |
| Mobile app | — | Yes |
| Compatible third-party wallets | — | 0 |
| Other features | ||
| FIDO2 / U2F security key | — | No |
| Password manager | — | No |
