Dog & Bone Locksmart - keyless bluetooth padlock - smart padlock - smart lock - Silver Keyless - secure, manage and open with your mobile Bluetooth device Total security with a 128-bit advanced encryption - the highest Bluetooth security standard, plus 256-bit cloud generated private key for added security Share 'virtual keys' instantly with the option to provide unlimited, limited, or scheduled access. Track who has opened your lock and when. Conveniently manage all your LockSmart, LockSmart Mini and LockSmart Travel locks within the one intuitive app Long lasting and rechargeable battery (up to 2 years or as many as 3,000 opens before re-charging) Made with a hardened steel shackle + die cast zamak 3 zinc alloy body