The Tangem Ring Size 9 Ring & 2 Cards is a cryptocurrency management set consisting of a ring and two cards linked to the same digital wallet and sharing the same private keys. Access is via NFC: tap the ring or a card against a compatible phone, then confirm through the Tangem app using a PIN or biometrics. The device has no battery or screen, and transactions are confirmed in the app.

The private key remains in the secure chip and is never exposed to the internet. The wallet can be used without a recovery phrase, or with one optionally set up during configuration. A phone with NFC and the Tangem app are required.

• Package contents: Ring and 2 cards
• Ring size: 9 (US)
• Inner diameter: 19.84 mm
• Inner circumference: 62.33 mm
• Connection method: NFC
• App: Tangem
• Transaction approval: PIN or biometrics
• Security chip: CC EAL6+
• Firmware audit: Independent audits by Kudelski Security and Riscure
• Requirements: Phone with NFC and the Tangem app
• Guaranteed operating life: At least 25 years
• Transactions: Unlimited
• App features: Send and receive cryptocurrencies, buy, swap, and manage assets
• Coins and tokens: Thousands