Keystone (previously known as Cobo Vault): 100% Air-gapped QR code communication hardware wallet for Bitcoin, Ethereum, Tron and 1000+ crypto. Keystone (previously known as Cobo Vault) offers convenient cold storage solution with an open source firmware and PSBT multisig support. Protect your cryptocurrency with the perfect balance between secure and convenient hardware wallet with mobile phone support. Fingerprint sensor. Rechargeable battery included. You Sign What You See By using QR code transmissions, we have eliminated potential malware infiltration risks and delivered a level of transparency that just isn't possible with Bluetooth or USB. Learn how you can verify each and every transmission that comes into or out of the Keystone. Fingerprint Sensor Unlock the device and sign transactions in public with the fingerprint sensor. EAL 5+ Secure Element A proprietary bank-grade Secure Element ensures your private keys never leave the Keystone. The Secure Element generates a true random number for your private keys and is vital to ensuring your crypto assets are stored in the safest way possible. Our BIP32, BIP39, and BIP44 compliant firmware is also open source. Anti-Tamper Self-Destruct Mechanism “An anti-tamper self-destruct mechanism will wipe your private keys upon detection of disassembly if your Keystone is lost or stolen.” Coin Support BTC, ETH, BCH, DASH, LTC, TRX, USDT, DOT, KSM and XRP as well as ETH, and TRX tokens. Specifications Dimension & Weight Size: 112mm x 65mm x 18mm Weight: 115 g (without batteries) Material Fiberglass Screen 4" touchscreen What's in the box Keystone Pro, AAA battery holder, rechargeable battery, charging cable.