100 new and high qualitybr This product supports the use of the NFC function of the Android system phonebr Featurebr The smart ring is a fashionable and wearable electronic product with NFC chips.br Its able to connect to a smart phone to complete function performing and data sharing, that way many playful and convenient function will be accessiblebr Place the smart ring within the NFC area of a smartphone to perform screen unlocking, app lock unlocking, app quickly launching, name card information reading, etc.br Designed with Water-proof , you can wear it in all scene such as hiking, running and even swimming, but its supposed to be wiped dry to avoid the residual moisture in the ring soak your finger skin for long hour.br It can be used without power supply, very convenient.br Specific operationsbr By touching the nfc signal area of the phone, the smart ring can unlock the screen lock the application quickly start the application send and read business cards, website information and other functions.br Instructions for usebr 1 Please check whether the phone has nfc function, usually the phone nfc switch is in the system settings of the phone, and confirm the phone nfc signal area.br 2 If the phone has the nfc function, after turning on the nfc switch, search for the software about the nfc function in the application software market, download and install it, and operate according to the prompts on the software.br 3 Open the downloaded nfc software and operate according to the prompts on the software,br 4 Since nfc belongs to near field communication, when reading task, please make sure that the position of the ring chip is close to the nfc signal area of the phone, otherwise it may cause the situation that the reading and writing cannot be performed normally. Then according to the phone APP, function operation settings, matching, and establishing a shortcut function application.5 Support NFC function smart fingerprint password lock, NFC smart attendance, need to match, write tag information or number synchronization can be used.br Proauct name NFC Smart Ringbr Material Stainless steelbr Size6/7/ 8/9/10/11br Package Include 1x NFC Smart Ringbr Notebr Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understandingProducts from GuanGuan's store