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📏 Perfect Fit, Perfect Data — Size Smart, Live Smarter!
The RingConn Gen 2 Sizing Kit offers 9 precision plastic gauges to help you find the perfect fit for your RingConn Smart Ring (sizes 6-14). Designed exclusively for RingConn’s sensor-packed smart rings, this kit ensures a snug, rotation-free fit critical for accurate heart rate and activity tracking. Made with premium materials, it supports a comfortable, durable experience tailored to your finger, helping you avoid sizing guesswork and maximize your smart ring’s performance.









| ASIN | B0DGFZ3VWP |
| Additional Features | Activity Tracker, Heart Rate Monitor |
| Age Range Description | Adult |
| Band Material Type | Plastic |
| Best Sellers Rank | #565 in Electronics ( See Top 100 in Electronics ) #5 in Smart Rings |
| Brand | RingConn |
| Built-In Media | Instruction Manual, RingConn Sizing Kit |
| Case Material Type | Plastic |
| Cellular Technology | 4G |
| Color | White |
| Communication Feature | Bluetooth |
| Compatible Devices | RingConn Gen 2 Smart Ring |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Customer Reviews | 4.1 out of 5 stars 7,058 Reviews |
| Display Type | No Display |
| GPS | No GPS |
| GPS Geotagging Functionality | No GPS |
| Item Dimensions | 9.52 x 4.17 x 1.02 inches |
| Manufacturer | Guangdong Jiu Zhi Technology Co., Ltd. |
| Metrics Measured | Heart Rate, Blood Oxygen Monitor |
| Model Name | RingConn Gen 2 Sizing Kit |
| Model Number | SKR-02 |
| Operating System | RingConn Smart Ring |
| Shape | Round |
| Special Feature | Activity Tracker, Heart Rate Monitor |
| Style Name | Minimalist |
| Supported Application | Fitness Tracker |
| Target Audience | Unisex Adults |
| UPC | 810180160926 |
| Unit Count | 1 Count |
| Warranty Type | Limited |
| Water Resistance Level | Water Resistant |
| Waterproof Rating | IP68 |
| Wearable Computer Type | Smart Ring |
| Wireless Communication Standard | Bluetooth |
| Wireless Compability | Bluetooth |
| Wireless Provider | Unlocked |
W**O
Useful data that is reliable up to a point
My sense is that with RingCon versus the alternative that requires paying a monthly fee for service, is that RingCon is more than good enough to avoid paying a monthly fee. That said with all of the ring based solutions they are best used for everything except exercise. For that you really want something that fits as a band on your wrist to obtain accurate exercise data. But if you are looking for sleep data then RingCon certainly works very good for this purpose. Monitoring through the day also is good though if you are constantly having to remove the ring because of something you are doing with your hands, perhaps this might not be the best solution. One fear based upon reading on the Internet is battery longevity. The Internet suggests that the ring's battery will loose the ability to hold a charge in a year's time. Likely this could be because of the very small battery embedded in the ring is worked hard and over a year time gives up. The battery is not replaceable given it is encased in epoxy that seals the ring such that you can wash with the ring on. Apparently there is a trade in option and I believe the cost is $100. Which suggests that the long term cost of using the ring is not a usage fee, but $10/month given the battery wears out. Likely the competition isn't saying this such that their cost of operation is their monthly fee plus whatever it costs to replace their ring in a year or so... Would I buy this again? I want to say no. I found that after a month I learned all I needed from the data and the data wasn't changing. In the end it cost me the price of the ring to learn to solve why I wasn't getting a good night's sleep. Though it could be said that the ring's cost was cheap if that is the case.
R**R
Company is engaged
Came upon Ring Conn in my research for a smart ring. Looked at the competitors extensively and found Ring Conn met and or exceeded what I was looking for. Essentially it checked all of the boxes. Ordered the Ring sizing kit that is available and pulled the trigger. I was pleases/satisfied with the rings function and it's interface with the app. (No subscriptions btw). About 8 months in, the battery began having issues with operating duration. I skeptically reached out to the company. What I was expecting and what transpired caught me by surprise. Their reply was speedy, concerned and action oriented. They asked a few questions and in a matter of days, a replacement Ring arrived complete with instructions to move data over and included return supplies. The replacement functions as intended and fit and finish is as new. Ring Conn's response and corrective action was engaged and thorough. Impressive and exceeded my expectations. My message to them is included as the entire process was top level. "I have received everything as expected and I believe i successfully disconnected the old ring from my info. I feel the replacement process went very well and exceeded my expectations. I would be happy to provide a review of the process or you could use this reply. There were no bumps or hiccups to complicate the process. I found everyone to be helpful and the goal seemed to be a positive problem free process. Which was successful. I appreciate your attention to the matter as if I was the only one that mattered. Thank you for your assistance and the goal was obvious. To make things right. You did!" I would not hesitate to conduct another transaction with them. All positive!
B**E
No Subscription Required, But a New Update Removed All Functionality from the device.
Edit: Beware- Do Not Waste your Money! I ended up liking this device more than I first suspected. I got used to using the rings and found the sleep and other data easy to understand and correlate. I had decided to edit my review and give it 5 stars, despite the difficulties with the ring not accommodating my wheelchair use. That is, until yesterday. For some reason, the developers released an update that removed everything I loved about the device and replaced it with nothing useful. You can no longer tell when you were asleep or awake; there are no sleep-stage data graphs, and the graphic representation of movement disappeared as well. The smart ring became stupid with the speed of an update. I've sent feedback to the developer, but I don't expect a reasonable reply. I don't know why they removed all functionality from what was an excellent smart ring with easy-to-understand graphs and no subscription fees. As far as I can tell, they haven't added a subscription fee yet, but they've trashed the usefulness of a good device and replaced it with nothing. I wouldn't recommend this smart ring to anyone as it is currently non-functional. Hopefully, enough people will provide feedback, and the developers will consider returning the ring’s original functions and graphs. Pros I like the fit, color, and look of this smart ring. I did order the sizing kit. I suggest that anyone contemplating purchasing this ring try on the different sizes. I would have ordered the wrong size had I not tried the sizing kit first. It's more comfortable than I had expected. I am not used to wearing rings, and I expected it to be bulky and annoying, but a few hours after putting it on, I forgot it was there. I really like that there’s no subscription. The ring does an adequate job of monitoring sleep, heart rate, O2, and most other measurements. The battery life appears to be as advertised, which is a plus. I've found that most electronic devices advertise longer battery life than my experience shows, so it's refreshing to see that the developers of this device were honest in their advertising. I appreciate this, as I rarely encounter it in practice. Cons However, it has difficulty deciding how to categorize exercise. I am disabled and wheelchair bound. Apparently, there is no way to inform the program of this fact, which has it misunderstand my activity level. I would like to see an option added to the programming to accommodate people with physical disabilities, including those who use mobility devices such as canes, walkers, and wheelchairs. The most annoying thing about the app, however, is that the date is off by 1 day. I want a way to manually set the date, since it doesn't automatically adjust to the correct date. Another thing that slightly bothers me is that the sleep reports aren't as detailed as those from an Apple Watch or a Fitbit. I assume that’s because there's no subscription, but I could be wrong. Overall, there would need to be significant changes to earn more stars in my review. I haven't tried other smart rings, except for an inexpensive one I purchased some time ago that had a very short battery life and wasn't comparable to today’s smart rings. If the developers fixed the few issues I had with this ring, I would recommend it without reservation. But since I haven't tested it against the competition, I can say it's worth looking into for now. The time between charges is impressive, and it does have the benefit of no subscription fee. These two things alone make it worth looking into.
H**A
my yellow gold Gen 2 ringconn is pretty, accurate, & anti-scratch!
Everything from its pretty aesthetics to its battery life to its functionality & accuracy is PHENOMENAL! It’s so slim & sleek (noticeably less bulky compared to the Oura Ring!) And it blends in with my other yellow gold jewelry! In over 6 mths the yellow gold color hasn’t tarnished or scratched off (like customer reviews say the oura ring does!) It truly IS waterproof! I never take it off when washing my hands or washing dishes & it still works great! I’m so impressed with how accurately it detects my sleep patterns, & it knows if I fell back asleep or took a nap! It also has everything I need for tracking my cycle (you can input notes & symptoms etc). I really purchased this ring because I wanted the BBT feature to track my ovulation, but it only reads your SKIN temp so it’s not as accurate as I’d hoped… Helpful “Find My” Feature: I misplaced my ring in the house the other day so I used the app to find it by sounding a beeping alert & lighting up/glowing blue! And the map on the app accurately showed exactly where in the house my ring was! It is so precise! The battery life is VERY LONG (8+ days!), and the charging time is SUPER QUICK! (like under 45 min!) And you don’t need to pay extra $ for the APP (unlike other competitors!) which is a big plus! Overall I am SO impressed with this fitness ring and I highly recommend! UPDATE: My mother in law wanted the silver GEN 2 ‘AIR’ for her birthday & she loves it so far! (see the pic of it on her pointer finger. It looks great on the same hand as her white gold wedding band!)
A**I
Great tracking and battery life, but the black finish scratches easily
I’m very happy with my RingConn ring overall. Functionally, it does exactly what I wanted it to do. I really appreciate how much it tracks, and it has been a good fit for my needs. Being able to get it with my FSA card was also a huge plus. The charging setup is simple, and the battery life has been great. I don’t feel like I’m constantly having to worry about keeping it charged, which makes it much easier to wear daily. My only real complaint is the durability of the black finish. I work with my hands a lot, and with normal day-to-day handling of different materials, the ring has picked up scratches pretty quickly. The ring itself still works great, but cosmetically the black version does not seem to hold up very well if you use your hands a lot for work. Overall, I really like the ring and would recommend it for the tracking features, comfort, charging, and battery life. I just wish the black finish was more scratch resistant, especially for people who wear it while working.
S**C
I like the RingConn 2 a lot! After 6 months still happy!
I like the RingConn 2 a lot! After 6 months still happy! I selected RingConn 2 mainly because of the Sleep Apnea data. ...But I weighed a lot of factors including price and reviews. Also, my Cardiac implant (loop recorder) stopped working, so this was a way to replace some of that data. PHONE APP - The phone app is pretty good, somewhat intuitive, but I liked the pre-May 2026 app version better. CHARGING - The charger module has a battery inside, so you put it inside to charge, slide it in you pocket and continue to count your steps. - It can go well over a week without needing a charge (11 -14 days). - Sleep Apnea mode reduces this time, whereas it is doing more continuous monitoring of vitals. FIT It fit me perfect (I used the ring-sizer for the other 2 major brands in big-box stores to get my size) SERVICE - At about 5 months, my ring no longer charged. - RingConn Support gave me some trouble shooting tips. - Then replaced it with no hassle, they even let me change the color to gold.
J**J
Do it! You won’t regret it.
I wasn’t sure whether I was going to like wearing a Smart Ring, but I have found that I love it. It does take a few days of getting used to it on my finger. The insights provided are fantastic and without a subscription fee. Cost is reasonable for what you get. I had also looked at the Oura, but between the higher price and subscription fee, RingConn made even more sense. As an example, I knew that I probably wasn’t getting enough sleep and was slightly sleep deprived. RingConn shows me exactly how much sleep I’m getting each night, plus the quality of sleep. This incites me to go to bed a bit earlier and relax before I get to bed. I also like the other metrics, such as vitals and activity. The app is super easy to use and provides a lot of data without overwhelming me. I chose the Gen 2 over the Gen 3 because it’s smaller. I think that I wouldn’t have been as happy with the Gen 3 just because of the size, plus I don’t need the Gen 3 alerts.
A**R
it’s okay
I’ve had this ring since November 2025, that being said I’ve noticed a few things: the ring doesn’t perform well on its own— I have an Apple Watch that I wear daily so it took me a while to realize that it’s just importing the data my watch is collecting. The days that I have forgotten to wear my watch, the ring doesn’t automatically track my workouts so if you’re big on keeping track of your calories, I would shy away from this ring. Honestly, had I noticed earlier I would’ve returned the ring. Another issue is that the app isn’t the best, my ring is consistently disconnected from the app or it takes too long to load especially if you’re not opening it daily. The app is easy to navigate, but not the most aesthetically pleasing if you’re into that. As far as vitals and menstrual tracking I would say the ring does an OK job- I deleted the Flo app and I’ve been using the ring to keep track of my period so no complaints there. In my opinion, the fit of the ring is standard. I normally wear a size 7-7.5 and my ringconn is a size 7 and it fit great. I will say if you’re into weightlifting consider getting a cover because it does scratch easily.
C**N
Titre : Excellent tracker, super solide et SAV Ringconn irréprochable !
Étant fan de high tech et santé connecté, j’ai voulu tester les anneaux connectés pour pouvoir essayer de me dégager un peu des montres connectées et pouvoir reporter des montres classique. J’ai donc choisis et J'utilise la RingConn Gen 2 depuis près d'un an et j'en suis très satisfait. Le suivi de la santé et du sommeil est très précis, et l'application remonte énormément de métriques utiles de manière claire, complète et sans aucun abonnement payant. C'est d'ailleurs un vrai plus pour anticiper certains coups de fatigue ou maladies : j'ai eu un épisode de fièvre et la bague a été particulièrement efficace pour détecter la hausse de température.elle détecte les potentiels épisodes de migraines et nous met sous surveillance. La bague est légère et tellement confortable qu'on l'oublie vite au quotidien. Elle est aussi particulièrement robuste : je bricole beaucoup avec, elle prend pas mal d'impacts et encaisse très bien les chocs. Je me lave aussi très souvent les mains avec sans jamais prendre la peine de l'enlever, et elle résiste parfaitement. Au bout de 10 mois, j'ai eu un souci de batterie. J'ai contacté le service client : ils ont été extrêmement réactifs et m'ont renvoyé une bague neuve sans aucun chipotage. C'est très rassurant d'avoir un produit aussi complet et résistant adossé à un SAV aussi efficace. Je recommande sans hésiter !
T**Q
Ringconn Sizing Kit was a big help
Excellent!
S**O
Si lo quieres para medir y devolver, olvídalo
Se tarda mucho en llegar y una vez que llega, te lo pruebas y dices “pues lo regreso, ahí dice que se puede” y si, se puede, pero lo que no sabes es que el envío corre por tu cuenta y amenos que quieras mandarlo por correos de México y darle la bendición, mejor olvídalo, que el envío sale más caro que el mismo producto. Ya tire el mío a la basura
S**I
Funziona !! Realmente ed è coerente !!
Mi ha sorpreso per la coerenza dei dati e la qualità del monitoraggio dell’OSA. Trovo molto coerenti i risultati misurati con la sensazione al risveglio. Nonostante un monitoraggio intenso la batteria riesce a durare 4/5 giorni.
M**A
Funciona, recomendado.
Primera vez que uso anillo inteligente y debo decir que me ha ayudado mucho a evaluar curvas de estrés por trabajo y ver el patrón que se repetía de acuerdo a las reuniones que tuviera. Además te va guiando en la calidad de sueño calificando día a día como se duerme. Lo recomiendo.
Trustpilot
2 weeks ago
2 weeks ago