NGRAVE COMBO - ZERO Crypto Hardware Wallet & GRAPHENE Backup

In this review the NGRAVE COMBO is presented as a security-focused solution for cryptocurrency owners who prioritize truly offline key generation and a durable backup. The bottom line: this kit is for users who want the strongest possible physical and software protections for private keys. The reviewer found the ZERO wallet's 4-in touchscreen and certified secure OS combined with the GRAPHENE stainless steel backup make for a persuasive package that keeps keys offline while still letting users manage Bitcoin, Ethereum, tokens and NFTs with convenience.

Key Features

• 4-in touchscreen: The built-in display makes device setup and transaction confirmation intuitive without exposing private keys to a connected computer.
• CC EAL7 certified OS: A state-of-the-art certified operating system reduces attack surface and provides high-assurance protection for signing operations.
• Secure element chip: The CC EAL5+ secure element stores secrets and performs cryptographic operations in a hardened environment.
• Offline key generation: The patented TRNG chip, biometrics and user input combine to generate private keys completely offline for maximum entropy and safety.
• GRAPHENE stainless backup: The encrypted, recoverable stainless steel backup secures the NGRAVE Perfect Key against fire, water and physical degradation.
• One-way QR signing: ZERO and the LIQUID app use transparent one-way QR-codes so transactions are signed offline and private keys never leave the device.

Who It's For

The NGRAVE COMBO suits long-term cryptocurrency holders, collectors of NFTs, and anyone managing multiple coins who needs a high-assurance, offline-first security model. Its emphasis on certified OS security and a hardened secure element appeals to users who treat their private keys like high-value assets and who are willing to invest time in a more rigorous backup process.

Less appropriate for casual or mobile-first users who want a minimal, pocket-sized dongle or who prefer cloud-based custodial convenience; the COMBO is centered on absolute key safety and a physical stainless backup rather than lightweight everyday convenience.

Pros & Cons

Pros

• Extremely strong security posture with a CC EAL7 certified OS and CC EAL5+ secure element.
• Fully offline private key generation using a patented TRNG chip, biometrics and user input for high entropy.
• Durable GRAPHENE stainless steel encrypted backup provides recoverable, long-term protection of the seed.
• One-way QR-code signing via the LIQUID app keeps private keys offline while allowing convenient transaction management.

Cons

• The emphasis on maximum security means a steeper setup and backup process than very simple hardware wallets.
• Not the smallest or most pocketable option for users who need ultra-portable daily carry.

Specifications

Our Verdict

The NGRAVE COMBO is a specialist solution that delivers industry-leading physical and software protections for private keys, making it a strong buy for serious holders and collectors who value long-term, offline security. Its combination of certified OS, secure element, TRNG key generation and a stainless steel encrypted backup offers rare assurance and good value for anyone who needs durable, recoverable key protection.

Frequently Asked Questions

Can I manage multiple cryptocurrencies with this kit?
Yes. The NGRAVE LIQUID app supports Bitcoin, Ethereum, other tokens and NFTs when paired with the ZERO wallet.

Are private keys ever exposed to the internet?
No. The device generates and stores keys offline and uses one-way QR-code signing so private keys remain offline.

How does the GRAPHENE backup protect my seed?
GRAPHENE provides an encrypted, recoverable stainless steel backup designed to resist fire, water and physical damage while allowing seed recovery when needed.