The Coldest Crypto Wallet

ZERO gives you state-of-the-art security with an intuitive user interface.

Create your keys and sign transactions with a fully offline device.

4" Touchscreen

Easily manage multiple wallets. Tap and swipe.

Impenetrable by design

Anti-tampering protection against physical attacks.

EAL7 certified

Highest level of security in the blockchain & financial industry

Biometric & light sensor

Enhanced security by light, fingerprint & QR scanning

Safest solution for your Bitcoin, NFTs and Crypto

100% Offline
Generate and protect your keys offline.
ZERO is fully "air-gapped", it does not rely on USB or any network connection capability such as WiFi, Bluetooth, NFC, or 4G. All communication takes place via transparent QR codes.
The Highest Security Certification
We take your safety so seriously that we went for the highest security certification in the world. ZERO is the only financial product to integrate an EAL7-certified OS.
Fingerprint sensor
Biometric security
ZERO's biometric sensor adds an additional layer of security for authentication and transaction signing. Your fingerprint is used as a variable to create your Perfect Key, unlocks your device, and signs transactions in combination with a solid 8-digit PIN code.
ZERO v1.4
Unleash Passphrase
This security feature extends your Perfect Key or seed phrase. Adding a passphrase creates a new hidden wallet with new coins and addresses. They are not stored on ZERO, and you can create as many as you want.
Custom ZERO Operating System
ZERO’s Operating System (OS) was developed from scratch by our experienced security experts. Whereas some hardware wallets rely on mobile phone operating systems, NGRAVE removes any associated vulnerabilities with its own OS.
What Is Being Said About ZERO?
Discover review videos, user feedback, interviews and more!
Crypto Experts Review NGRAVE

Easiest solution for your Bitcoin, NFTs and Crypto

4" Touchscreen
Your coins are one tap away
The high-tech of your favorite vault wrapped in a slick, premium 4” touch screen experience. Store up to 100 accounts. Just swipe and tap. ZERO does the rest.
New Feature
Truly Own Your NFTs
Now you can protect your ETH based NFTs fully offline on your ZERO. Easily visualize your art collections on your LIQUID. Managing your NFTs has never been safer.
Seamless QR codes
Make quick transactions
QR codes allow for secure, seamless, and instant communication with the online world. Scan and sync all your accounts to the app, or initiate a transaction and sign it with ZERO. Ideal for quickly reacting to a volatile market.
Your Final Shield
Your coldest wallet deserves a protective screen that does not fall behind in quality.
NEW Version 1.4
ZERO Firmware Update
Download and install the latest version of your Coldest Wallet firmware.

All Supported Coins and Tokens

How to securely set up your Crypto Self-Custody
  • Step 1
    Create the Perfect Key
    ZERO generates your Perfect Key based on the built-in "True Random Number Generation" (TRNG) patented chip, your unique biometrics, and photon measurements of the ambient light.
  • Step 2
    Backup your Key
    Create the most secure backup by punching your perfect key in our stainless steel backup solution, GRAPHENE, consisting of two plates for an additional encryption layer.
  • Step 3
    Sync with our app
    Sync ZERO with our LIQUID mobile app via QR code. This way you have all your public information of your accounts. Your private keys remain on the ZERO, offline.
  • Step 4
    Receive funds
    Send funds to your wallet by copying your address or showing the QR code. Easy, just like any other wallet.
  • Step 5
    Check your portfolio
    Easily monitor your portfolio on the blockchain without ZERO. Your private keys are offline.
  • Step 6
    Securely sign transactions

    Start a transaction on your LIQUID app. It will create a QR code. Scan it with your ZERO, verify the information, and sign the transaction. ZERO will create another QR code. Scan it with LIQUID to broadcast to the blockchain.

How to use NGRAVE ZERO

How to Create an NGRAVE wallet
Set up your ZERO for the first time and create your very own NGRAVE Perfect Key. The most secure way in the market to create your own wallet. Oh, and it's so easy!
Initiate and Sign a transaction
You can finally forget about USB and go completely offline. Scan a QR code to send your funds safely across the blockchain, instantly.

Which cold wallet to choose?

Discover how NGRAVE compares to Ledger and Trezor.

ZERO Technical Specifications

Size and Weight
  • Width:
    Width: 125 mm - 4.92”
  • Height:
    70 mm - 2.7”
  • Depth:
    13 mm - 0.51”
  • Weight:
    180 gr - 6.3 ounces
Certification level


Biometric Sensor

12 x 12 mm Fingerprint Sensor


High-End Metal

Secure Element

State-of-the-Art Secure Element


640 x 480 with Built-in Light Sensor

USB-C Port

Only for Wall Charging & Secure Firmware Updates


101,6 mm (4”) diagonal LCD, 480 x 800 Pixel, 600Cd/m2 Capacitive Touch Screen

Power Management

1 200 mAH (Ultra-Efficient Low Power) Battery with USB-Compatible Battery Charger & Low Power High Efficiency Power Management


2019 STM32MP157C (High Performance Dual-core ARM® Cortex®-A7 including ARM® NEON and ARM® Trustzone® + ARM® Cortex®-M4 with FPU/MPU) with Secure Boot, Secure RAMs, Secure RTC, Active Tamper and Trustzone® Peripherals, Cortex M4 Resources Isolation. Ultra low power consumption.

Cryptographic Support

Message Digest: RIPEMD160, SHA224, SHA256, SHA384, SHA512, SHA3, SHA3-XOF, KECCAK, BLAKE2B, GrøstlCryptography Key, with key generation:DES (56, 112, 168 bits), AES (128, 192, 256 bits),ECC (256 bits), RSA (1024, 2048, 3072,4096 bits) RSA encryption with PKCS1 v1.5, PKCS1 OEAP, NOPAD schemes HMAC Signature: HMAC-SHA256, HMAC-SHA512 RSA Signature with PKCS1 v1.5, PKCS1 PSS schemes Elliptic Curve Signature: ECDSA/EC-Schnorr (SECP256K1, SECP256R1, Brainpool256R1, Brainpool256T1), EdDSA (Ed25519) Elliptic Curve Diffie Hellman: ECDH (SECP256K1, SECP256R1, SECP521R1,Brainpool256R1, Brainpool256T1, Curve25519) Symmetric Cryptography: DES, Triple-DES, AES with ISO9797M1,ISO9797M2, NOPAD schemes Random Number Generation: RND, Prime RND (hardware support TRNG), NIST SP 800-90A CTR DRBG


Built to be impenetrable

Revolutionary hardware wallet with a custom firmware that is secure and easy to use.