RingConn Gen 2 Air Sizing Kit - Size First Before You Buy - Choose from 9 Sizes - Sizes 6 to 14 - Only Smart Ring
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To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 2 left in stock, order soon!
Arrives
Tuesday, Nov 25
Recently Viewed
Color: Ring Sizing Kit
Size: 6-14
Features
- [Not Standard Sizing] RingConn Smart Ring differs from standard rings as it contains sensors on the inside. Therefore, we recommend using the RingConn Sizing Kit to determine the best fit. The RingConn Smart Ring is available in sizes 6 to 14, accommodating various finger sizes
- [How to Measure & Fit Check] Wear the sizing gauge snugly around the base of your finger, ensuring it doesnt rotate freely. We recommend wearing it for over 24 hours to determine your most accurate fit. For optimal data and comfort, the RingConn Smart Ring should fit snugly against your skin without rotating. When testing for the best size, make sure the sizing gauge remains tight around the base of your finger
- [Choose a Finger] The RingConn Smart Ring can be worn on any finger and on either hand. For optimal accuracy and comfort, we recommend wearing the RingConn Smart Ring on your index, middle, or ring finger. Be sure to size the exact finger on which you plan to wear your RingConn Smart Ring for the best fit
- [Manufacturing Quality] RingConn Sizing Kit is made from premium-grade plastic, while the RingConn Smart Ring is crafted from aerospace-grade titanium, coated with a scratch-resistant layer for outstanding corrosion resistance and durability
Operating System: RingConn App
Memory Storage Capacity: 2 MB
Special Feature: Activity Tracker, Custom Activity Tracking, Heart Rate Monitor, Multisport Tracker, Sleep Monitor
Connectivity Technology: Bluetooth
Wireless Communication Standard: Bluetooth
Battery Cell Composition: Lithium Polymer
GPS: No GPS
Shape: Round
Brand: RingConn
Model Name: RingConn Gen 2 Air Sizing Kit
Package Dimensions: 4.45 x 4.41 x 1.34 inches
Item Weight: 3.52 ounces
Item model number: RCA-02
Batteries: Nonstandard Battery batteries required. (included)
Date First Available: April 8, 2025
Manufacturer: Shenzhen Ninenovo Technology Limited
Item Weight: 0.1 Kilograms
Memory Storage Capacity: 2 MB
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 25
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Dune Gold
Size: 11
I LOVE this ring. It is the perfect width. It tracks well, the app is very nice and easy to use without needing a subscription. I feel the steps are accurate. I have a apple watch as well and they are always close to the same steps but I love the ring for ease of sleeping. I hate sleeping with a watch so I take it off but still wanted to be able to track my sleep and its perfect. Its almost spot on with tracking. I do tend to see in the mornings it gets my wake time but might say I went back to sleep if I dont get up right away even when I dont go back to sleep but its only a few minute diffrence so thats fine with me. Battery life: I get about a week with the battery and it sends you updates on when it is expected to die which I like. It also charges pretty fast which is nice.
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Reviewed in the United States on July 11, 2025 by Savanna McElwain
Color: Galaxy Silver
Size: 8
I recently decided to purchase the RingConn to compare it with my Oura ring, and I must say, I’m genuinely impressed with it for the price! One of the best parts? There’s no monthly subscription, which is such a relief! The ring feels similar in weight to my Oura (I wear a size 8), and even though it's more affordable, it doesn't skimp on quality. It's incredibly comfortable to wear throughout the day. While I won't call it the ultimate fitness tracker since it doesn’t automatically recognize workout types (I'm still keeping my Apple Watch for that) it shines in other areas! The sleep tracking and stress monitoring features are fantastic and truly helpful. Plus, I’ve set up a handy widget on my phone to keep an eye on my daily steps, and the connectivity has been seamless. Overall, I’m giving the RingConn a fantastic review and am excited to transition to it while saying goodbye to that pesky Oura subscription. If you're looking for a great alternative, I highly recommend!
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Reviewed in the United States on July 20, 2025 by Juzlin
Color: Dune Gold
Size: 8
I've had the Rinconn Gen 2 Air for two months now. I previously bought the sizing rings and wore size 8 for a couple of days. The real ring fits perfectly and I alternate between index finger during the day and middle finger at night because my wedding band interferes with hand actions during the day. Previously I used a Misfit Ray with wrist-strap for many years and would remove it at night, during showers or swimming. I only take the gen 2 air off for charging. I charge the same day/time once a week just to make sure I do it. The ray had batteries that lasted 4 months. Step tracking seems accurate - actually more accurate than my ray; also I do turn on exercise tracking outdoor walking for planned walks and it is no trouble at all and I like that it provides a map. Sleep monitoring and analysis has been particularly useful for me as I've had sleep difficulties. Heart rate, different stages of sleep, SpO2 tracking has been great. The app has some interesting insights. The app is free, the reporting is excellent, there have been no problems with syncing and the battery really lasts! It finish has not scratched at all during these 2 months. This product is a winner! **********UPDATE*********** My husband just ordered and received his a couple of days ago. He is pleased as well - although new to wearing or using any kind of tracker. I've been happy with new updates this week and am comparing the automatic tracking feature with the manually invoked one. Pretty close except with the former one doesn't use the gps so no accompanying mileage or map.
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Reviewed in the United States on August 8, 2025 by Cat Lover Cat Lover
Color: Galaxy Silver
Size: 8
Disclosure: This is my first smart ring. I am a triathlete. I have had other Fitbits and $500+ Garmin watches that track my sleep and daily activities and exercises. Therefore, this review I will be somewhat comparing with the Fitbit and Garmin devices. I have done lots of research on smart rings before buying this one. I like the style of it that I can wear it as a promise ring for my fiancé. The best thing is that it is subscription-free. Fit: I bought the RingConn’s ring kit to try first. I aim to wear it on my left ring finger and I was between a size 8 and 9. It was a tough choice but I went with size 8 (after returning the size 9 because it was too loose). In the colder days I can remove the ring with some twisting and turning. But in warmer days, my finger swells, so I usually rinse my hand under cold water, apply some body wash/soap, and it can easily be removed. If I had gone for size 9, it would have been loose for me. Also, don’t trust the sizing kit completely. I had to return the real ring size 9 even though the sample ring size 9 fitted me great. I ended up with size 8. Form: I like it that the diameter is not too wide. It looks like a wedding band but slightly wider. I got the silver one and it looks great. Heart rate monitoring: the ring takes your HR once every 5 minutes. It gives you a HR range for that 5 minute (e.g. 51~55 bps). SpO2: it takes it once every 30 minutes. It gives you a range (e.g. 95~96%). Heart rate variability (HRV): it takes every 30min. It gives you a wide range (e.g. 30~50ms). Skin temperature: looks okay to me. It gives me a temp every night. Respiratory rate (bpm): it just gives you an average range without a graph to deep dive. All-day stress index: it gives you a number every 30 minutes, for the entire day. It gives you a score throughout the day. Sleep: (1) the total time asleep for the past 7 days has been slightly off. The ring is about 50/50 chance it knows when I start sleeping. Waking up seems accurate though. (2) The sleep stages: it gives me how many minute I was awake, in REM, having light sleep, and in deep sleep. I can’t say the accuracy of it but comparing to my garmin and fitbit, the range is a bit off. Garmin says I have 3hr8m of REM while RingConn says I have 1hr42m. Garmin says I had 1hr1m Deep sleep while RingConnsays I had 1hr55m. Garmin says I had 4h23m Light sleep while RingConn says I had 4h48m. And Garmin says I was awake for 3min while RingConn says 5min. Steps: it tracks steps pretty accurately. Compared to my Garmin, out of 10k steps, the difference is maybe 200-400 steps. Same goes with running. Sports: the steps and heart rate actually pretty decent for running. If you are more into accurate with heart rate during exercising, go with Garmin heart rate straps. For cycling, forget about it; the ring tracks the heart rate very poorly and it doesn’t track steps because you are cycling. I don’t even want to try pool swimming. Overall, I will most likely continue to wear it daily. The app has lots of data and graph to go through. For the price, I am not expecting it to be as good as garmin but I think it does a great job with room to improve. I have showered with it, hand wash with it, and I accidentally dropped it from my waist level. It is still working fine. The battery does run for at least 7 days and more with one charge. I didn’t need the sleep apnea detection. As mentioned, they have room to improve. Don’t expect it will do everything perfectly. That’s why this is the Gen 2.
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Reviewed in the United States on March 31, 2025 by Mark Mark
Color: Ring Sizing Kit
Size: 6-14
It's comfortable to wear, I have chosen to wear it in place of my wedding band and my wife commented that it looks like a wedding band. I have compared the steps counter to my Samsung fitness app., and the steps was with in 1% of each other. The sleep app. works good, I enjoy the other features equally as well. It was important to me that I didn't have to purchase another subscription to use the ring and I don't have to carry my phone with the memory the ring has. I would recommend the Ring Conn Gen 2 as a exceptional purchase.
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Reviewed in the United States on August 13, 2025 by M.L. Moon