The Keystone 3 Pro is a premium air-gapped hardware wallet built for investors who want stronger offline protection for their digital assets.
Unlike hardware wallets that rely on USB, Bluetooth or direct computer connections for signing transactions, the Keystone 3 Pro uses QR codes and MicroSD card support for offline data transfer. This helps reduce remote attack risk by keeping sensitive signing operations away from internet-connected devices.
It is designed around a 4-inch full-colour touchscreen, full transaction display and anti-blind-signing support, giving users clearer visibility over what they are approving before they sign. Keystone also states that the device is fully open source, including hardware and software code, allowing the wider community to audit and verify its design.
Security is the core feature. The Keystone 3 Pro includes 3 independent secure element chips, fingerprint authentication, passphrase support, Shamir Backup support and anti-tamper protection that can destroy internal data if physical tampering is detected.
The device supports 45+ software wallet integrations and 5,500+ crypto assets, making it suitable for users who want a flexible hardware wallet for Bitcoin and broader multi-chain use. Keystone also highlights support for managing 3 separate wallets or seed phrases on one device.
Key features
- Air-gapped transaction signing via QR codes and MicroSD
- 4-inch full-colour touchscreen
- Full transaction display
- 3 secure element chips
- Fingerprint authentication
- Passphrase and Shamir Backup support
- Anti-tamper self-destruction protection
- Open-source hardware and software
- Supports 3 separate wallets or seed phrases
- 45+ software wallet integrations
- 5,500+ supported crypto assets
Best for
The Keystone 3 Pro is best suited to users who want a highly secure cold wallet with strong offline signing, clear transaction verification and broad wallet compatibility. It is particularly useful for people who prefer a touchscreen experience and want to avoid direct device connections when signing transactions.
Important note
Keystone 3 Pro is a self-custody device. You remain responsible for safely recording and protecting your recovery phrase, passphrase and backups. If these are lost or exposed, your funds may be permanently lost or stolen.
Due to the nature of Hardware Wallets – no returns are facilitated.
SimplB is the registered agent for Keystone in Africa.