Introducing Cold ❄️: The Next Generation Hardware Wallet
NotWallet Crypto announces Cold ❄️, our first hardware wallet designed for ultimate security and ease of use. Coming soon.
Cold ❄️
A New Era of Security
We're thrilled to announce Cold ❄️, NotWallet Crypto's first hardware wallet. After months of development and rigorous security testing, we're working on a device that combines military-grade security with the simplicity our users love.
Cold ❄️ represents our commitment to giving users complete control over their digital assets while maintaining the highest security standards in the industry. Coming soon.
Key Features
Secure Element Chip
Bank-grade secure element (EAL6+) ensures your private keys never leave the device. Protected against physical tampering and side-channel attacks.
Bluetooth & USB-C Connectivity
Connect wirelessly via Bluetooth 5.0 or use USB-C for a wired connection. Works seamlessly with both mobile and desktop devices.
Long Battery Life
Built-in rechargeable battery lasts up to 8 hours of continuous use. Weeks of standby time ensure it's always ready when you need it.
Multi-Chain Support
Support for Bitcoin, Ethereum, Solana, and 1,000+ cryptocurrencies. Manage all your digital assets from a single device.
OLED Touch Screen
2.4-inch OLED display with touch interface makes transaction verification intuitive. Verify every detail before signing.
Biometric Authentication
Built-in fingerprint sensor provides an additional layer of security. Optional PIN code backup for ultimate flexibility.
Technical Specifications
Hardware
- • Secure Element: EAL6+ certified chip
- • Display: 2.4" OLED touch screen (320×240)
- • Processor: ARM Cortex-M4
- • Storage: 16MB encrypted flash
- • Battery: 1000mAh Li-Po
- • Charging: USB-C (fast charging)
Connectivity & Security
- • Bluetooth 5.0 (encrypted)
- • USB-C data & charging
- • Fingerprint sensor (360° recognition)
- • Anti-tamper detection
- • Open-source firmware
- • Reproducible builds
Software Support
- • NotWallet mobile app (iOS/Android)
- • NotWallet desktop app (macOS/Windows/Linux)
- • MetaMask integration
- • WalletConnect support
- • Ledger Live compatible
Physical
- • Dimensions: 68 × 40 × 9mm
- • Weight: 45g
- • Material: Aircraft-grade aluminum
- • Colors: Space Gray, Silver, Nordic Blue
- • Water resistant: IP67
Nordic Design Philosophy
Cold ❄️ embodies our Nordic design principles: simplicity, functionality, and beauty. The device features a minimalist aesthetic with clean lines and premium materials.
The aircraft-grade aluminum body feels solid yet lightweight. The OLED touch screen provides a modern interface that's intuitive to use, even for first-time hardware wallet users.
Every detail has been carefully considered, from the satisfying click of the buttons to the responsive touch interface. This is a device you'll be proud to use daily.
Security First, Always
At NotWallet, security is not just a feature—it's our foundation. Cold ❄️ will incorporate multiple layers of security to protect your assets:
- ✓ Secure Element: Your private keys are stored in a bank-grade secure chip, protected against physical attacks and side-channel analysis.
- ✓ Open Source: Our firmware is fully open-source and audited by security experts. Build it yourself to verify authenticity.
- ✓ Anti-Tamper: Built-in sensors detect physical tampering attempts and automatically lock the device.
- ✓ Encrypted Communication: All Bluetooth and USB communications are end-to-end encrypted.
- ✓ Recovery Backup: 24-word recovery phrase ensures you can always recover your assets, even if the device is lost.
Perfect For
🏦 Long-Term Holders
Store your Bitcoin, Ethereum, and other cryptocurrencies with peace of mind. Cold storage keeps your assets offline and safe from online threats.
💼 Active Traders
Quick Bluetooth connectivity lets you sign transactions on the go. Perfect for traders who need security without sacrificing convenience.
🎮 NFT Collectors
Protect your valuable NFTs with hardware-level security. Connect to OpenSea, Rarible, and other marketplaces via WalletConnect.
🌍 DeFi Users
Interact with DeFi protocols securely. Verify every transaction on the device screen before approving smart contract interactions.
How Cold-A Compares
| Feature | Cold ❄️ | Competitor A | Competitor B |
|---|---|---|---|
| Secure Element | ✅ EAL6+ | ✅ EAL5+ | ❌ |
| Bluetooth | ✅ | ❌ | ✅ |
| Touch Screen | ✅ 2.4" OLED | ❌ | ✅ 1.3" LCD |
| Fingerprint | ✅ | ❌ | ❌ |
| Battery Life | 8 hours | N/A | 4 hours |
| Open Source | ✅ | ⚠️ Partial | ❌ |
| Price | Coming Soon | $149 | $179 |
Coming Soon
❄️ Cold ❄️
Our first hardware wallet is currently in development. Sign up to be notified when it becomes available.
What's in the Box
- 📦 Cold ❄️ Hardware Wallet
- 🔌 USB-C to USB-A cable (1m)
- 📝 Recovery phrase cards (3x stainless steel)
- 📱 Quick start guide
- 🎁 Leather carrying case
- 🔐 Security seal & authenticity certificate
Frequently Asked Questions
Will Cold ❄️ be compatible with my existing wallets?
Yes! Cold ❄️ will support BIP39/BIP44 standards, so you can import existing wallets. It works with MetaMask, Phantom, and most popular wallet applications.
How secure is Bluetooth connectivity?
All Bluetooth communications are end-to-end encrypted. Your private keys never leave the secure element. Bluetooth is only used to transmit signed transactions, never sensitive key material.
What happens if I lose my Cold ❄️?
Your recovery phrase (24 words) allows you to restore your wallet on any BIP39-compatible device. Always keep your recovery phrase in a secure location.
Can I verify the firmware?
Absolutely. Our firmware is open-source and supports reproducible builds. You can compile the firmware yourself and verify it matches what's on your device.
What cryptocurrencies will be supported?
Cold ❄️ will support Bitcoin, Ethereum, Solana, and over 1,000 cryptocurrencies and tokens. We're constantly adding support for new chains and tokens.
Get Notified When Cold ❄️ Launches
Join the waitlist and be among the first to know when Cold ❄️ becomes available. In the meantime, secure your crypto with NotWallet app.