

📏 Find your perfect fit before you commit — because smart rings deserve smarter sizing!
The Gen 2 Air Sizing Kit by RingConn offers 9 precise ring sizes (6-14) designed exclusively for the RingConn Smart Ring. Made from premium-grade plastic, it ensures a snug, rotation-free fit by recommending a 24+ hour wear test on your chosen finger. This kit guarantees optimal comfort and sensor accuracy, preventing sizing errors before purchase.









| ASIN | B0F43QZV4X |
| Batteries | Nonstandard Battery batteries required. (included) |
| Best Sellers Rank | #438 in Electronics ( See Top 100 in Electronics ) #4 in Smart Rings |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,054) |
| 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 | 4.41 x 4.41 x 1.34 inches |
E**T
When my RingConn air came, it fit perfectly
It accurately sized my ring finger appropriately, so I guess it worked perfectly when I got my RingConn air.
C**R
Ring Size
These are a nice set. Finally, be able to get rings that are the right size. Recommend purchase...
M**N
Sizing kit
Simple, easy to use, and true to size to the actual ring
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.
D**V
Definitely Worth Getting Before Buying the Actual Ring 💍✨
This sizing kit is a great idea before ordering the real smart ring. The fit of the RingConn is definitely different from your regular ring size, so this helped me choose the correct one with confidence. The sample rings feel durable, the color looks nice, and the overall quality of the kit is impressive. It’s a simple but super helpful step before committing to the full watch-style features like step count and heart rate monitoring on the real ring.
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.
D**A
May not get a box with different colored rings
Came earlier than expected. I did not get a box of multi colored rings. Mine were all a bluish swirl color. I have to admit I was disappointed about that. Ring sizing kit itself was fine
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
K**N
ليست خاتم رينكون فقط المقاسات
Trustpilot
3 weeks ago
2 months ago