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Keystone - Cryptocurrency Hardware Wallet 100% air-gapped, 4-inch Touch Screen, Store Your Crypto securely (Keystone Essential)
100% air-gapped hardware wallet securely and conveniently send and receive crypto assets via QR code.Your private key will be stored in the secure element and will never leave there. The firmware of the Secure Element, hardware design (circuit diagram and BOM), hardware wallet application layer, and some parts of the hardware wallet operating system layer are open sourced. Multicoin and BTC-only firmwares available the multicoin firmware supports 1000+ cryptocurrencies including BTC, ETH, USDT, BCH, XRP, TRX, LTC, DASH, DOT, KSM and tokens of ETH, TRX. The BTC-only firmware is compatible with 

Price is $129.00
Price: $129