MUZI NFC Smart Ring,Multifunctional Waterproof Finger Digital Ring for All Android Windows NFC Cellphone Mobile Phones (# 10, Transparent)
Lock and unlock your Smart phone or tablet quickly, hide the app when you leave your smart phone alone.
Share & Transfer information (send the private message/Picture/business card/ website link to the person you want to share by a simple touch).
Fit for All Android and Windows NFC Mobiles.
Water Resistant Usage: set up smart lock, card recharge, smart phone unlock, phone important file lock, transfer files.
Quickly start the phone application, in advance will need to quickly start the program startup command written in the smart ring, when the smart ring touches the phone will automatically find and start the program.