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2 models
| Model | Secure Element chip | Open-source firmware | Air-gapped signing | Signing connectivity | Built-in battery | Weight | Score |
|---|---|---|---|---|---|---|---|
| Block Bitkey 2024 | No | Yes | No | NFC | Yes | 65 g | 4.3 |
| Block Bitkey (2026) 2026 | No | Yes | No | NFC | Yes | 79 g | 4.8 |
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