Keystone 3 Pro Review
Verdict
Fully air-gapped via QR with a big touchscreen and the widest software-wallet compatibility (incl. MetaMask extension and app).
Score breakdown
Six pillars, weighted identically for every wallet (security-weighted).
Pros
- Fully air-gapped (QR, no USB data)
- Three secure-element chips + fingerprint unlock
- Largely open-source
- Big 4" touchscreen
Cons
- Bulkier than a key-style device
- QR workflow has a learning curve
- SE certification level cited inconsistently
Security & track record
No major exploit reported.
Specifications
| Type | Hardware · Air-gapped hardware wallet |
|---|---|
| Price | ~A$226 (USD-converted (~US$149)) |
| Maker | Keystone · Hong Kong |
| Released | 2023 |
| Secure element | Triple secure element (~EAL5+) |
| Open source | Open-source |
| Backup / recovery | Seed (12/24) + Shamir (to 16 shares) |
| Air-gapped | Yes |
| Connectivity | QR air-gapped, USB-C (charge/update), microSD |
| Screen | 4" colour touchscreen |
| Platforms | Android, iOS, 30+ software wallets |
| Assets | 5,500+ coins; works with MetaMask, Solflare, OKX |
Keystone 3 Pro — frequently asked questions
Is Keystone 3 Pro safe?
Keystone 3 Pro is a hardware wallet. It keeps your private keys offline on a Triple secure element (~EAL5+) secure element, so they can't be reached remotely. Its firmware and app are fully open-source and auditable. No major exploit reported. The biggest risk with any self-custody wallet is your recovery phrase — never share it or type it into a website.
How much does Keystone 3 Pro cost?
Keystone 3 Pro costs ~A$226 (USD-converted (~US$149)). Only ever buy a hardware wallet directly from the manufacturer or an authorised reseller — never a marketplace listing or a "pre-configured" device.
What coins does Keystone 3 Pro support?
Keystone 3 Pro supports 5,500+ coins; works with MetaMask, Solflare, OKX. Check it covers the specific coins and networks you hold before you commit.
Is Keystone 3 Pro good for beginners?
Keystone 3 Pro is reasonably beginner-friendly. It's a air-gapped hardware wallet, best for air-gap purists, MetaMask/DeFi, large screen.
What happens if I lose my Keystone 3 Pro device?
Losing the device doesn't mean losing your crypto — you restore your funds onto a new device using your backup (Seed (12/24) + Shamir (to 16 shares)). But if you lose the recovery phrase itself, the funds are gone permanently — no one, including the maker, can recover them. Back it up offline in more than one secure place.
General information only — not financial advice. Prices are approximate (many makers publish USD only) and change frequently; verify current pricing with the maker. Self-custody wallets put you in full control of your keys and your risk.