The smart ring

 IC is two NFC chips; ID is one NFC chip and one ID chip

product manual:

A. Product description: The smart ring is a stylish and wearable electronic product that can be connected to a smart phone through Near Field Communication (NFC) to complete function execution and data sharing. The design has a high level of water resistance and can be used without any power supply. Embedded NFC chip can only be connected to smart phones with NFC function.
B. Detailed operation: Put the smart ring in the NFC area of the smartphone to perform the following operations: screen unlock, application lock and unlock, application quick start, business card and URL information sending and reading, etc.
C. Instructions for use:
a) First, check if your smartphone has NFC function. It can usually be found in the system settings. If you can’t find the relevant option, please contact the manufacturer’s after-sales support, or search Google for whether the smartphone model has NFC function and confirm its NFC area.
b) If your smartphone has NFC function, please turn on the NFC switch, search for NFC-applicable software in your app store, then download and install them.
c) Start the NFC APP and follow the instructions.

d) Since NFC is a near field communication technology, when reading any data, please ensure that the upper side of the ring chip is close to the NFC area to avoid reading and writing failures.