RingConn Gen 2 vs Gen 2 Air: what the lower price gives up

The verdict

What's the same

More than the price gap suggests. According to RingConn's own product pages, the two rings share:

• No subscription. Gen 2's page says “No Subscriptions” and “Multi-dimensional health monitoring included.” RingConn sells no paid tier for the Air either.
• Sizes. Both come in 6-14, and RingConn says outright: “The ring sizes for both Gen 2 and Gen 2 Air are the same.” Both come with a free sizing kit.
• Phones. Both need iOS 17.0 or newer, or Android 10.0 or newer.
• Water. Both are rated IP68 (100 m / 328 ft).
• Warranty. Both carry RingConn's one-year warranty outside the EEA, with normal battery capacity loss excluded.
• Legal status. Both come from a brand that has held an Oura patent license since the October 2025 settlement (RingConn), so there's no import cloud over either.

The four real differences

1. The charging case, and the battery claim

This is the big one. RingConn claims 10-12 days per charge for Gen 2 and says it's “Extended Up to 150 Days With Charging Case,” with the case in the box. For the Air, RingConn claims “up to 10 days battery life, 90-min fast charging,” and lists no charging case.

In daily life, that's the difference between two habits. With Gen 2, the case does the remembering: you top the ring up from the case and charge the case now and then. With the Air, you charge the ring itself every week or so, and a quick 90-minute charge makes that easy if you're home. On a two-week trip, the case matters more. Both battery figures are RingConn's claims under its own conditions, and we haven't found a reviewer's battery log for either ring to check them against. See smart ring battery life for how every brand's claim reads, and smart ring chargers and charging cases if the case is the deciding factor.

2. Sleep apnea monitoring

Gen 2 lists “Automatic sleep apnea monitoring” and claims “90.7% Sleep Apnea Monitoring Accuracy.” The Air doesn't have it: “Gen 2 Air covers key health tracking features, though it does not include sleep apnea monitoring” ( RingConn).

So is the feature worth paying more for? If you want a nightly signal to watch, Gen 2 is the only one of the two that gives you one. If you'd never act on it, the Air loses nothing that matters to you.

3. Materials

RingConn describes Gen 2 as “Aerospace-Grade Titanium Alloy x Medical-Grade Epoxy Resin” and the Air as “Titanium Steels, PVD Coating, Medical-Grade Epoxy Resin.” RingConn doesn't publish a durability comparison between the two, so we can't tell you how each finish wears over a year. What we can say is that they're different materials, and the Gen 2 is the titanium-alloy ring of the pair.

4. The evidence

Gen 2 has a chest-strap comparison of its own. A 2026 preprint by Tao et al. (Research Square, not peer-reviewed) recorded 64 athletes seated for 10 minutes after exercise and found a heart rate bias of -0.42 bpm and an RMSSD bias of 1.62 ms against a Polar H10 (Tao et al.). That only speaks to seated, low-motion conditions, and the authors' affiliations weren't verified. Gadgets & Wearables found the Gen 2 read heart rate higher than a chest strap on runs, while its resting heart rate correlated 98% with a WHOOP's and its HRV 82%.

We found no published study of the Air. It would be tempting to assume the Gen 2 results carry over, but we didn't find RingConn stating that the two rings share the same sensors, so we don't assume it. Our smart ring accuracy guide covers every study we found, and if you want certainty for your own ring, test it against a chest strap.

Side by side

On our ring rubric, Gen 2 scores 8.2 and the Air 7.7. The gap comes from two places: claimed battery (the case) and evidence (the preprint). Everything else, including cost of ownership, scores the same. The weights are on our methodology page.

What each costs to own

Neither ring has a fee, so the three-year cost of each is simply the ring price. The whole cost difference between them is the gap in hardware price, which you can see on the live listings in the cards below; RingConn lists the Air as its lowest-priced ring. For contrast, an Oura membership would add $209.97 over the same three years on its annual plan, before the ring.

For how that compares with every other brand's plan, see what a smart ring really costs over three years and which smart rings require a subscription. If the Air's price is the draw, our best budget smart rings puts it against the other low-cost options.

Sizing: identical, but not standard

Because RingConn says Gen 2 and Gen 2 Air sizes are the same, a size you find with one ring's kit applies to the other. That's where the shortcut ends. RingConn also says its “ring sizes differ from standard rings,” so your jewelry size isn't a safe guess, and it says Gen 3 sizes differ from its other rings, so a Gen 2 size doesn't carry over to Gen 3. Use the free kit, on the finger you'll wear it on. Our smart ring sizing guide walks through it, and smart ring sizing compared explains why no brand's sizes match another's.

Warranty, HSA/FSA and stock

• Warranty: one year outside the EEA for both, from delivery. RingConn says “routine battery replacement and normal capacity loss are not included,” and the battery is sealed in. RingConn also sells optional two- and three-year Product Protection in the US that covers Gen 3, Gen 2 and Gen 2 Air; it must be bought at checkout, and RingConn says “the battery is included as part of the overall device” (RingConn Support). See smart ring warranty and returns.
• HSA/FSA: RingConn says Gen 2, Gen 2 Air and Gen 3 can be bought with HSA/FSA funds through Flex. Flex decides eligibility through a telehealth consultation, and a clinician may issue a Letter of Medical Necessity if you have a qualifying condition, so check with your plan administrator.
• Stock: both product pages showed “Out of stock” on RingConn's own store when we checked, which may reflect only the default size and color. Both were listed on Amazon.com.

Mistakes to avoid with these two

• Mixing up the names. “Gen 2” and “Gen 2 Air” look alike in a search result. Check the listing title for “Air” before you buy, and check whether a charging case is mentioned, since only the Gen 2 includes one.
• Assuming the Air has every Gen 2 feature. It doesn't include sleep apnea monitoring, by RingConn's own statement. If that feature is why you want a RingConn, the Air is the wrong ring.
• Reusing a size from another brand, or from Gen 3. The Gen 2 and Air share sizes with each other and with nothing else. Your Oura size, your jewelry size and a RingConn Gen 3 size don't carry over.
• Treating battery days as a promise. “Up to 10 days” and “10-12 days” are RingConn's claims. Batteries also lose capacity with age, and RingConn's warranty doesn't cover normal capacity loss. See smart ring battery lifespan.
• Buying either for workout heart rate. A reviewer found the Gen 2 read high against a chest strap on runs, and the Air has no data at all. If training numbers matter, add a strap; our best chest strap for HRV compares them.

Who should buy which

• RingConn Gen 2: you travel, you want to charge as rarely as possible, you want the sleep apnea signal, or you want the ring with a chest-strap comparison. Full details in our RingConn Gen 2 review.
• RingConn Gen 2 Air: you want the lowest-cost no-fee ring from a brand with settled US legal status, and a weekly charge doesn't bother you. See our RingConn Gen 2 Air review.
• Neither: you want the longest single charge and the widest size range RingConn offers. Read RingConn Gen 3 vs Gen 2. Or, if you're still weighing RingConn against Oura, Oura vs RingConn.

More matchups are in the compare hub.