

📏 Nail your perfect smart ring fit before you buy—because comfort is the new luxury.
The RingConn Gen 2 Air Sizing Kit offers 9 precise sizes (6 to 14) to help you find the perfect fit for your RingConn Smart Ring. Designed exclusively for RingConn’s sensor-packed smart rings, this durable, premium-grade plastic kit ensures a snug, rotation-free fit by recommending a 24+ hour wear test. Ideal for sizing your index, middle, or ring finger, it eliminates guesswork and maximizes comfort and sensor accuracy before purchase.









| ASIN | B0F43QZV4X |
| Batteries | Nonstandard Battery batteries required. (included) |
| Best Sellers Rank | #395 in Electronics ( See Top 100 in Electronics ) #4 in Smart Rings |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,134) |
| 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 | 4.45 x 4.37 x 1.26 inches |
A**Y
Very affordable kit, cute colors
A very affordable sizing kit to determine your size before buying an actual smart ring. This was a dollar and I feel like it works just as good as a $10 kit from the actual RingConn store.
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.
J**A
accurate
supper easy to use and accurate. ordered my ring and had the right size because i used the sizer.
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.
G**R
Accurate fit
This kit is helpful in selecting correct size, was able to try multiple sizes different fingers to get the most comfortable fit and to see how fit with different temperatures. Would suggest getting the kit.
R**N
Ring size
Easy to use , application Easy to set up. So far works great no problem
B**E
good
good for size - saved my but
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.
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 days ago
2 months ago