When comparing NFC Eclipse vs Kerv NFC SmartRing, the Slant community recommends Kerv NFC SmartRing for most people. In the question“What are the best smart rings?” Kerv NFC SmartRing is ranked 2nd while NFC Eclipse is ranked 3rd.
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Pros
Pro Small
Measuring 8mm wide and 2.3mm thick, the Eclipse isn't much bigger than a regular ring.
Pro 2 X 888 bytes of storage
The Eclipse uses two NFC tags - one on the inside and one on the outside. Each chip can store 888 bytes - enough for a URL or contact information. There is also enough storage to contain an unlock code, so they can also unlock smart door locks if they support NFC unlocking.
Pro 1cm activation distance
The NFC chip used in the Eclipse is NTAG216, which can be read at a distance up to 1cm. This ensures that even low power readers, or readers inside a case (such as a phone) will still be able to read the ring.
Cons
Con No notification support
The Eclipse doesn't sync to your phone at all, and it lacks a screen as well. It won't show the time, or any notifications.