NGRAVE ZERO NGRAVE Combo (ZERO + GRAPHENE)
A plan byNGRAVE ZERO
NGRAVE ZERO, made by Belgium's Hestara (NGRAVE brand), is an air-gapped hardware wallet that communicates only through QR codes: it has no data USB, WiFi, Bluetooth or NFC for transactions, and its USB-C port is used only for charging and firmware updates. It carries a Common Criteria EAL7-certified secure element, the highest level claimed in this category. Backup does not use the classic paper seed phrase but the "Perfect Key" (a 64-character hexadecimal key, convertible to a 24-word BIP-39 seed) combined with GRAPHENE, an encrypted stainless-steel backup. It claims support for over 3,500 assets (Bitcoin, Ethereum and ERC-20, MultiversX, NFTs). Pricing is among the highest on the market: about €398 for the ZERO alone, about €498 for the Combo with GRAPHENE. The EAL7 operating system is proprietary: its security model must be taken on trust rather than verified in the code.
NGRAVE Combo (ZERO + GRAPHENE)
- Price
- €498
What's included
- ZERO device
- Encrypted GRAPHENE steel backup
- Same features as the ZERO
Data & conditions
| Fund custody | Self-custody (funds in your control) |
|---|---|
| Type | Hardware (cold storage) |
| Source code | Closed-source |
| Recovery | Perfect Key (64 caratteri esadecimali, convertibile in 24 parole BIP-39) + backup in acciaio GRAPHENE cifrato |
| Bitcoin-only | No |
| Supported chains | Bitcoin, Ethereum, ERC-20, MultiversX |
| Price | €398 |
| Secure element | Yes |
| Air-gapped | Yes |
| Connectivity | QR, USB-C |
| Built-in swap | No |
| Built-in staking | No |
| Segment | B2C |
| MiCA / License status | Nessuna (hardware wallet self-custody) |
Strengths
- 100% air-gapped via QR (no data USB/WiFi/Bluetooth/NFC); EAL7-certified secure element; encrypted GRAPHENE steel backup; broad multi-asset support; EU-based company (Belgium).
- Self-custody: funds stay in your wallet — the platform cannot touch them.
- No KYC: usable without identity verification.
- Self-hostable: you can run your own instance or node.
Weaknesses
- High price (about €398, Combo about €498); proprietary, non-open-source operating system (limited code verifiability); QR-only signing flow less immediate for users coming from USB wallets.
- Closed source: no way to verify what it does with wallet and data.
Verdict
Score 4.3/5, very strong profile. In its favour: 100% air-gapped via QR (no data USB/WiFi/Bluetooth/NFC); EAL7-certified secure element; encrypted GRAPHENE steel backup; broad multi-asset support; EU-based company (Belgium). The trade-off to weigh: high price (about €398, Combo about €498); proprietary, non-open-source operating system (limited code verifiability); QR-only signing flow less immediate for users coming from USB wallets.
On the Sovereignty lens the score is 3.8/5 (very strong): the strength is fund control (5.0/5), while trustless / auditability (0.0/5) is the weak link.
Promp's editorial rating based on real fees and net annual cost. Promp reviews third-party products independently.
"Sovereignty" rating: score computed on privacy/anonymity (30%), fund control (20%), censorship resistance (20%), trustless/auditability (20%) and costs (10%). Same data, different weights.
FAQ
How much does an NGRAVE ZERO cost?
The ZERO device alone costs about €398 (€398.00 on the official store). The Combo, which includes the ZERO plus the GRAPHENE steel backup, costs about €498 (€498.00). Prices in euros from the NGRAVE store, August 2026.
Is NGRAVE ZERO really air-gapped?
Yes: it communicates only through QR codes and never uses data USB, WiFi, Bluetooth or NFC for transactions. The USB-C port is for charging and firmware updates only, not for signing or moving funds.
Is NGRAVE ZERO open source?
No: the EAL7-certified operating system is proprietary. The Common Criteria certification attests to the secure element's security level, but the code is not published as open-source, so we classify it as closed-source.
Sources
- Official service page Eal7 · Air gapped qr · Asset · Recovery · +1 Data verified on Aug 3, 2026
- shop.ngrave.io Prezzo eur · Combo Data verified on Aug 3, 2026