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- Optimum vs X1
Prokey Optimum vs SafePal X1
What Optimum does better (6) and where X1 wins (7) — every spec side by side.
Why is Optimum better than X1?
- Open-source firmwareYes · X1: No
- Source code availableYes · X1: No
- Brick / wipe PINYes · X1: No
- Wipe after failed attemptsYes · X1: No
- USBYes · X1: No
- FIDO2 / U2F security keyYes · X1: No
Why is X1 better than Optimum?
- Mobile appNo · Optimum: Yes
- Screen size0.96″ vs 1.8″+88%
- Coin controlNo · Optimum: Yes
- USB-CNo · Optimum: Yes
- BluetoothNo · Optimum: Yes
- Built-in batteryNo · Optimum: Yes
- Thickness9.4 mm vs 6 mm+57%
Specifications
Side by side
| Security | ||
| Secure Element chip | Yes | Yes |
| Secure Element certification | — | EAL5+ |
| Air-gapped signing | No | No |
| 100% air-gapped | No | No |
| Supply-chain & tamper protection | Yes | Yes |
| Secure boot | — | Yes |
| Anti-klepto (anti-exfil) signing | No | No |
| Firmware & open source | ||
| Open-source firmware | Yes | No |
| Source code available | Yes | No |
| Reproducible builds | No | No |
| Firmware licence | Lesser GPLv3 | GPLv3 |
| Upgradable firmware | Yes | Yes |
| Firmware update via | USB | USB |
| Bitcoin-only firmware / edition | No | No |
| Device lock | ||
| PIN lock | Yes | Yes |
| PIN entered on the device | Yes | Yes |
| Fingerprint unlock | No | No |
| Duress PIN / decoy wallet | No | No |
| Brick / wipe PIN | Yes | No |
| Wipe after failed attempts | Yes | No |
| Time-delayed unlock | No | No |
| Anti-phishing words | No | No |
| Keys & backup | ||
| BIP39 passphrase | Yes | Yes |
| Shamir backup (SLIP-39) | No | 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) | No | No |
| Stateless use (no stored keys) | No | No |
| Multiple seeds on one device | No | No |
| Bitcoin features | ||
| Multisig | No | No |
| Taproot | — | Yes |
| Miniscript | No | No |
| Message signing | No | No |
| Coin control | No | Yes |
| Own node connection | No | No |
| Tor support | No | No |
| Replace-by-fee | No | 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 | USB | Bluetooth |
| USB | Yes | No |
| USB-C | No | Yes |
| Bluetooth | No | Yes |
| NFC | No | No |
| QR code camera | No | No |
| Animated QR (UR) | No | No |
| microSD signing | No | No |
| Screen & input | ||
| Screen | Yes | Yes |
| Screen size | 0.96″ | 1.8″ |
| Screen type | LCD | LCD |
| Screen resolution | 128 × 64 | 128 × 64 |
| Touchscreen | No | No |
| Colour screen | No | No |
| Gorilla Glass | No | No |
| Controls | Buttons | Buttons |
| QWERTY keyboard | No | No |
| Battery & power | ||
| Built-in battery | No | Yes |
| Battery capacity | — | 200 mAh |
| Removable battery | — | No |
| Wireless charging | No | No |
| Design | ||
| Weight | 17 g | — |
| Length | 50 mm | 86 mm |
| Width | 41 mm | 54 mm |
| Thickness | 9.4 mm | 6 mm |
| Materials | Plastic | Plastic |
| Water / dust resistance | No | No |
| Several colours available | No | No |
| Warranty (months) | 12 | 12 |
| Assembled in | — | China |
| DIY build possible | No | No |
| Apps | ||
| Official apps | — | Android, iOS, Browser extension |
| Desktop app | No | No |
| Mobile app | No | Yes |
| Compatible third-party wallets | 0 | 0 |
| Other features | ||
| FIDO2 / U2F security key | Yes | No |
| Password manager | No | No |
