Multi-frequency bands and multi- standards- From 125KHz to 13. 56MHz, upgraded version R4 can simulate encrypted IC cards or ID cards in a variety of formats, help you to effectively deal with all-fields card swiping scenes. NFC cloud services- The built-in featured cloud services can be respectively started through the two sets of NFC modules. It can be used directly without APP installation and is applicable to Android and ios dual platforms. Waterproof and dustproof- Upgraded version R4 has an IP68 waterproof and dustproof rating, which can meet the application requirements of various environments. No need to recharge- Upgraded version R4 is driven by the wireless power of the reading and writing device, no need to recharge, no need to worry about battery life, it is a good partner that can accompany you day and night.
K**R
you have to go online to a site to log in to see your set up and only then you get nothing more than a tracker or use percentage no sleep cycle no text push notifications nothing useful. It doesn't even turn on after the first ...
It is not compatible with most phones. Some phones, you have to go online to a site to log in to see your set up and only then you get nothing more than a tracker or use percentage no sleep cycle no text push notifications nothing useful. It doesn't even turn on after the first week.
T**M
Not a "smart" ring
Not a "smart" ring. with all the BS you have to go through to get it to do anything you might as well open your phone. I was under the impression it would do a lot more than what I was lead to believe. Have to admit it is a nice ring but not anywhere near what i thought it would be
C**M
Costume jewelry junk
Ring doesn't work It's faults advertisements by the sailor I think Amazon needs to discontinue Association with this company
L**E
It does NOT do anything they claim it does!!
This product supposedly tracks your heart rate...it does NOT!! Seller claims it does not need to be charged....ummm how the heck is it going to work w/out a charger??? It won"t!! This supposedly does a lot of things that it does NOT do, not with out a dang charger!! Its a ring, that is all. It's about as valuable as a "pet rock"!!! Do Not Buy!!! Its just, FRAUD!!! Waste of money and time!!
K**F
Don't buy it!
Well the ring doesn't do what it says it does. It was a waste of time and money to but it.
K**P
One Star
Not what it’s advertised to be. And won’t work with an iPhone
J**K
It works for my purposes!
Listen. I didn't buy this ring for its bogus claims about germanium balancing out my ions, or really any of the other supposed alternative health benefits. No, I got this thing because it's an NFC ring.Built into this stylish little ring is a tiny NTAG213 chip. It acts as a short-range transmitter and I can encode things like my health information or my Twitter username onto it. And when the ring comes into contact with an Android phone when NFC is turned on, my health information will be displayed on the device. Or maybe it will open my twitter page. (All actions require the owner of the device to OK the action, and plus this chip doesn't have enough storage to embed a virus, so don't you crazy wannabe jerky jerks get any ideas!)But specifically in my case, I used it to encode an unlock sequence for my home lock. And it works great. I just point the ring at the door and OPEN SAYS A ME! I love technology, man. We live in a world where magic like this can happen as long as you have the know-how! And this little guy is helping me realize that dream.One downside as a US buyer is that the ring comes directly from China, so it will take a while to arrive. Bear that in mind if you're planning on outfitting your fleet with NFC-transmitters for their truck locks.
S**S
Terrible!
Terrible product. I can't do anything with it. It's hard to get the ring to connect to my phone.
J**P
It's just a ring...
With a red dot on the inside. It does nothing.
Trustpilot
2 weeks ago
1 week ago