

📏 Size smart, wear smarter — don’t miss out on the perfect fit!
The RingConn Gen 2 Air Sizing Kit offers 9 precise sizes (6 to 14) designed exclusively for the RingConn Smart Ring, ensuring a perfect, sensor-optimized fit. Made from premium-grade plastic, the kit allows users to test their finger size over 24+ hours for maximum comfort and accuracy. The smart ring itself is crafted from aerospace-grade titanium with a scratch-resistant finish, combining durability with cutting-edge wearable technology.









| ASIN | B0F43QZV4X |
| Batteries | Nonstandard Battery batteries required. (included) |
| Best Sellers Rank | #222 in Electronics ( See Top 100 in Electronics ) #3 in Smart Rings |
| Customer Reviews | 4.6 4.6 out of 5 stars (947) |
| Date First Available | April 8, 2025 |
| Item Weight | 0.1 Kilograms |
| Item model number | RCA-02 |
| Manufacturer | Shenzhen Ninenovo Technology Limited |
| Memory Storage Capacity | 2 MB |
| Package Dimensions | 5.83 x 4.45 x 1.38 inches |
M**N
Sizing kit
Simple, easy to use, and true to size to the actual ring
J**O
Great buy
The sizing ring set was much better than expected. They are made of plastic and very colorful. I think I may use as a jewelry accessory. Great item for the price .
S**A
Sizing rings/review for ring itself
There are enough sizes to find your perfect size. I have a size 10 on my right pointer finger. UPDATE: I have officially bought it and it came in yesterday! My first impression on it was that it feels like cheap plastic, but when I went and read the materials it’s made out of it made sense in order to keep it lightweight. As I’ve only had it for 24 hrs I can’t give a good review if it’s worth it or not but I will update again later. I order the size 10 as the sizing kit let decide which size would work best, it fits the same if not a little bit bigger than the sizing ring but nothing that I would need to size down. The silver looks great with the rest of my silver/white gold jewelry. The set up was easy and everything within the app started working immediately, I wore it to bed to get my sleep tracking going and it tracked it to the T! The cycle tracker is off but it only asked about my last one and I just had to guess so as I use it more and am able to put accurate data in I’ll be able to know how well it is. I’ll update in a few months.
A**R
Great but…
The ringconn sizing kit was good, I wore it for about a week. I wore it to the beach, I slept with it on, clean the house and did my normal day-to-day activities without any issues. It give you a wide range of different sizes to best fit which finger you would like to use it on. The only reason I didn’t give it Five stars is that it is slightly smaller than the actual ring, it worked out for me because the size 7 sizing ring was just a half a size too small so the size 7 in the actual ring fits perfectly even with my finger swelling at night. But that could be an issue for others.
S**E
Perfect for sizing
Perfect for sizing before purchasing a RingConn.
M**J
Comfortable and Stylish!
I am still contemplating between the RingConn and the Oura. I bought ring fitters for both. The RingConn is not perfectly round but is surprisingly more comfortable than the Oura. The profile is also a little smaller (which adds to the comfort). Bonus: The rings are pretty! The reason for the purchase was to find the perfect size, but these rings are super cute, I love the different colors. I am glad I bought the ring fitters and plan to purchase the RingConn based on the comfort of the rings in the sizing kit.
A**N
Good test run
Very accurate to the actual fit of the ring
S**E
Great idea to get a good fit
I wore this for a week or so before purchasing. It's worth a dollar to be confident of purchasing ring
R**N
Useful. I like that the sizing kit has the same inner details of the actual ring
ا**ا
حلو تساعدكم في اختيار مقاس المناسب انصح قبل تشتري الختام تأخذونه
M**A
I decided to not buy the ring since its annoying on the finger but good kit
Trustpilot
2 months ago
5 days ago