OneKey Classic 1S Pure | 2025 Crypto Cold Wallet Review

Choosing a hardware wallet for your crypto assets is one of the most important steps in your crypto journey. This is why I review here all the best devices currently on the market and today I have the very simple and very easy to use Onekey Classic Pure in my hands. I will give you my detailed breakdown on its features, user experience and how it compares against major competitors.

The OneKey Classic 1S Pure is a 2025 release that is all about being simple, sturdy, and super reliable. It’s designed to be ultra-portable, about the size and thickness of a credit card, which I am most fond of. This means I can easily slip it in my pocket, and carry it with me wherever I go. For the past 4 years this one, the older model has been with me on all of my travels and I travel 9 months of the year, so it;s important for me to have portable, lightweight items, like this one. It’s the same weight as my Crypto.com metal card here, so that’s quite something. What’s really cool is that the Pure version doesn’t have a battery at all. That might sound strange at first, but it’s actually genius. This reminds me of the first Ledger I had and my first Trezor. Both didn’t have a battery and only worked when plugged into my laptop. Why do I like this? It means the device will last much longer than any of these other gadgets. In 10-20 years time, those batteries might be so degraded, that you will be forced to migrate to other device, but if this issue is eliminated, then we’re talking longevity. This device is always ready to go when you need it.

Design and Build

• Ultra-light & Slim: Nearly the size and thickness of a credit card, the Classic 1S Pure is exceptionally portable and easy to slip into a wallet or pocket.
  
• Battery-Free: Designed without a battery, it ensures maximum longevity (no charging required), and is ready to use whenever needed—ideal for long-term HODLers or backup solutions.
  
• Controls & Display: Features a black-and-white display and tactile buttons for navigation, which is functional, responsive, and minimalistic, trading fancy screens for lightweight durability.
  
• Open Source: Its firmware and software are open source, which adds trust and transparency for security-minded users.
  
• Materials: A polycarbonate enclosure with ultrasonic welding contributes to its solid feel, despite the wallet’s remarkable thinness.
  

Core Features

• Security:
  
  • Uses CC EAL6+ certified secure chip—top tier in consumer hardware wallets, protects private keys against physical attacks1.
    
  • Two secure elements further safeguard sensitive data (especially notable for a wallet in this price range).
    
  • Supports BIP39 seed phrases (including passphrase/13th word support for advanced users).
    
• Connectivity:
  
  • Offers both USB-C and Bluetooth for pairing with desktop and mobile devices.
    
  • Works with the official OneKey App and is compatible with major third-party wallets.
    
• Compatibility & Coin Support:
  
  • Supports 5,000+ cryptocurrencies (BTC, ETH, major EVM/DeFi tokens, plus a wide multicoin list).
    
  • Functions across iOS, Android, Windows, macOS, and Linux.
    
• Portability: At around 20g, the Classic 1S Pure is ideal for travel, cold-backup, or as a secondary wallet.
  
• Package Includes: Device, USB-C cable, 3x recovery seed sheets.

Get this (or any other Onekey devices) with 10% Discount with this invite link or simply use code CRYPTOCORNER at checkout.

User Experience

• Setup: Fast and user-friendly, with clear onboarding and step-by-step guidance for creating your seed phrase and connecting to the app.
  
• No Battery Hassles: Always ready; doesn’t lose charge or degrade over time. This is one of its biggest advantages in my opinion. As a long term user, I believe that it’s super important to be able to use my wallet even after 20 years and even if I haven’t powered it for a long while. Without a battery, one of the biggest hurdles is eliminated.
  
• Responsive Controls: Buttons are tactile and reliable—no concerns about touchscreens in harsh or cold conditions.
  

Pros & Cons

Pros	Cons
Outstanding portability	No air-gap/PSBT or QR functionality
Battery-free / always ready	Limited advanced features vs Onekey Pro
Top-tier security chips	Monochrome, low-res screen
Bluetooth & USB-C	No fingerprint or touchscreen
Open source	No microSD backup option
Affordable (~$70)

OneKey Lineup Comparison

Feature	Classic 1S Pure	Classic	Touch	Pro
Battery	None (battery-free)	Yes	Yes (800mAh)	Yes, wireless chg
Screen	B&W, 128×64 LED	B&W, 128×64 LED	Color touchscreen	Color touchscreen
Security Chips	2× EAL6+	1× EAL6+	2× EAL6+	4× EAL6+
Connectivity	USB-C, Bluetooth	USB-C, BT	USB-C, BT	USB-C, BT, NFC
Advanced Features	–	–	Big screen, Easier UI	AirGap, fingerprint
Weight	~20g	~20g	75g	Heaviest (~100g)
Price	~$70–79	~$89	~$160	$270–280

• 
  Classic 1S Pure vs. Classic: The Pure is battery-less for extra simplicity and longevity, while the Classic has a built-in battery.
  
• Classic 1S Pure vs. Touch: The Touch offers a large color touchscreen and higher battery capacity, at the expense of size and cost.
  
• Classic 1S Pure vs. Pro: The Pro has every premium feature—larger screen, fingerprint, AirGap (fully offline signing), wireless charging, four security chips—and is best for those needing maximum security and frequent use.
  
• Classic 1S Pure: Best for simple cold storage and as a ‘forever’ wallet with minimal risk of battery failure.
  

Get this (or any other Onekey devices) with 10% Discount with this invite link or simply use code CRYPTOCORNER at checkout.

Comparison With Leading Competitor Ledger Nano S Plus

• Price: Similar ($70–90)
  
• Security: Also uses secure element, but not fully open source (Ledger’s firmware is closed)6.
  
• Features: Lacks Bluetooth. Operates via USB only; color screen; supports 5,500+ coins.
  
• Battery: None (USB-powered).
  
• Reputation: More widely known, but has faced controversy over firmware policies.
  
• Who Should Pick: Go Ledger if you want the biggest brand, but OneKey Classic 1S Pure is better for those prioritizing open-source firmware and Bluetooth flexibility.
  

Trezor Model One & Model T

• Trezor Model One:
  
  • Price: Similar (~$69–99)
    
  • Security: Fully open-source, but no secure element chip (debated, but some see this as less physically secure).
    
  • Connectivity: USB only, no Bluetooth or mobile pairing.
    
  • No battery, very lightweight.
    
  • Great track record, but less feature-rich regarding wireless/mobile.
    
• Trezor Model T:
  
  • Higher price (~$200)
    
  • Touchscreen, premium experience, more advanced OS/software.
    
  • Still, no secure element chip—security model relies on open-source transparency.
    

Other Alternatives (2025):

• Ledger Nano X: Battery-powered, with Bluetooth, costs ~$120–150, supports more coins, closed-source firmware, slightly heavier.
  
• Keystone Essential: Air-gapped with QR code support, battery, around same price but bulkier and less mobile-friendly.
  
• SafePal S1: Touchpad and affordable, but with mixed reviews on build quality.
  

Is the OneKey Classic 1S Pure Worth It?

Let’s recap, who is this ideal for:

• Long-term crypto holders: Secure, battery-free storage with minimal risk of hardware failure over time.
  
• Mobile or multi-platform users: Bluetooth and USB-C allow pairing with a wide range of devices.
  
• Fans of minimalism: Lightweight, simple, yet entirely functional.
  
• Open-source advocates: Full firmware transparency and easy verification.
  

Get this (or any other Onekey devices) with 10% Discount with this invite link or simply use code CRYPTOCORNER at checkout.

Consider Alternatives If:

• You want a large color touchscreen (choose OneKey Touch or Pro, or Trezor Model T).
  
• You need advanced features like air-gapping or fingerprint (choose OneKey Pro or certain Keystone models).
  
• You need brand recognition or specialized third-party integrations (consider Ledger or Trezor).
  

Final Take

The OneKey Classic 1S Pure stands out as one of 2025’s leanest and most secure value hardware wallets. It finds a sweet spot between affordability, uncompromising security (dual EAL6+ chips), real-world convenience (battery-free), and open-source assurance—making it an exceptional choice for both new and experienced crypto users who want to self-custody coins safely and simply.

If you’re after a wallet that works everywhere, won’t run out of power, and is open to inspection by the security community, the Classic 1S Pure deserves a top spot on your shortlist. For more advanced daily usage or maximum features, consider investing in the OneKey Pro or other high-end wallets. But for basic cold storage and mobile flexibility, it’s hard to beat the value proposition here.

Get this (or any other Onekey devices) with 10% Discount with this invite link or simply use code CRYPTOCORNER at checkout.

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You can also download my eBook guide to all major crypto wallets – hot and cold, I talk about the differences between these, which ones I recommend from my personal experience and I go through all of the top hardware wallets there, so you can make the right choice which is the wallet for you. It’s a free eBook, just get it from this link.

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☝These are my opinions, not financial advice, always DYOR.

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⚠️ DISCLAIMER ⚠️

The information contained in this video is for informational purposes only. Nothing herein shall be construed to be financial or legal advice. The content of this post reflects solely my own opinions. Purchasing cryptocurrencies poses considerable risk of losses.