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- Compare
- 3 Pro vs Zero
Keystone 3 Pro vs NGRAVE Zero
What 3 Pro does better (18) and where Zero wins (2) — every spec side by side.
Why is 3 Pro better than Zero?
- Open-source firmwareYes · Zero: No
- Reproducible buildsYes · Zero: No
- 100% air-gappedYes · Zero: No
- Source code availableYes · Zero: No
- TaprootYes · Zero: No
- Compatible third-party wallets11 vs 0
- Bitcoin-only firmware / editionYes · Zero: No
- Duress PIN / decoy walletYes · Zero: No
- Shamir backup (SLIP-39)Yes · Zero: No
- Message signingYes · Zero: No
- Coin controlYes · Zero: No
- Own node connectionYes · Zero: No
Why is Zero better than 3 Pro?
- Water / dust resistanceNo · 3 Pro: Yes
- Battery capacity1,000 mAh vs 1,200 mAh+20%
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | Yes |
| Secure Element certification | — | EAL5+ |
| Air-gapped signing | Yes | Yes |
| 100% air-gapped | Yes | No |
| Supply-chain & tamper protection | Yes | Yes |
| Secure boot | Yes | Yes |
| Anti-klepto (anti-exfil) signing | No | No |
| Firmware & open source | ||
| Open-source firmware | Yes | No |
| Source code available | Yes | No |
| Reproducible builds | Yes | No |
| Firmware licence | MIT | — |
| Upgradable firmware | Yes | Yes |
| Firmware update via | USB, microSD | USB |
| Bitcoin-only firmware / edition | Yes | No |
| Device lock | ||
| PIN lock | Yes | Yes |
| PIN entered on the device | Yes | Yes |
| Fingerprint unlock | Yes | Yes |
| Duress PIN / decoy wallet | Yes | No |
| Brick / wipe PIN | No | No |
| Wipe after failed attempts | Yes | Yes |
| Time-delayed unlock | No | No |
| Anti-phishing words | No | No |
| Keys & backup | ||
| BIP39 passphrase | Yes | Yes |
| Shamir backup (SLIP-39) | Yes | No |
| Seed XOR | No | No |
| BIP85 child seeds | No | No |
| 24-word seed | Yes | Yes |
| SeedQR backup | No | No |
| microSD backup | No | No |
| NFC backup card | No | No |
| User-added entropy (dice) | Yes | Yes |
| Stateless use (no stored keys) | No | No |
| Multiple seeds on one device | Yes | No |
| Bitcoin features | ||
| Multisig | Yes | Yes |
| Taproot | Yes | No |
| Miniscript | No | No |
| Message signing | Yes | No |
| Coin control | Yes | No |
| Own node connection | Yes | No |
| Tor support | Yes | No |
| Replace-by-fee | Yes | No |
| Silent Payments | No | No |
| Spending limits | No | No |
| Testnet | Yes | No |
| Supported assets | ||
| Altcoins & tokens | Yes | Yes |
| Bitcoin only | No | No |
| Connectivity | ||
| Signing connectivity | QR code, microSD | QR code |
| USB | No | No |
| USB-C | Yes | Yes |
| Bluetooth | No | No |
| NFC | No | No |
| QR code camera | Yes | Yes |
| Animated QR (UR) | Yes | No |
| microSD signing | Yes | No |
| Screen & input | ||
| Screen | Yes | Yes |
| Screen size | 4″ | 4″ |
| Screen type | LCD | LCD |
| Screen resolution | 800 × 480 | 400 × 800 |
| Touchscreen | Yes | Yes |
| Colour screen | Yes | Yes |
| Gorilla Glass | No | No |
| Controls | Touch Screen | Touch Screen |
| QWERTY keyboard | Yes | Yes |
| Battery & power | ||
| Built-in battery | Yes | Yes |
| Battery capacity | 1,000 mAh | 1,200 mAh |
| Removable battery | No | No |
| Wireless charging | No | No |
| Design | ||
| Weight | 103 g | 180 g |
| Length | 103.9 mm | 125 mm |
| Width | 62.5 mm | 70 mm |
| Thickness | 12.9 mm | 14 mm |
| Materials | Fiberglass | Alloy of metals |
| Water / dust resistance | No | Yes |
| IP rating | — | IP55 |
| Several colours available | No | No |
| Warranty (months) | 24 | 24 |
| Assembled in | China | Belgium |
| DIY build possible | No | No |
| Apps | ||
| Official apps | Android, iOS | Android, iOS |
| Desktop app | No | No |
| Mobile app | Yes | Yes |
| Works with wallet apps | Bitcoin Safe, Wasabi, Zeus, Nunchuk, Cove, Electrum, Sparrow, Specter Desktop, BlueWallet, Bitcoin Keeper, Bull | — |
| Compatible third-party wallets | 11 | 0 |
| Other features | ||
| FIDO2 / U2F security key | No | No |
| Password manager | No | No |
