RingConn Gen 3 Review

Smart rings have settled into a two-horse race, and the RingConn Gen 3 has taken the lead. Placed against twelve rivals it finished first, edging ahead of Oura on the strength of a slightly broader feature set and longer battery life — the health analysis offered by the two is otherwise very similar. It is not the most elegant ring you can buy, but it is currently the most complete.

Very little has changed in how the Gen 3 looks. Where Oura has moved to flat-mounted sensors and now produces something almost indistinguishable from a conventional ring, RingConn still houses its electronics in a raised bump on the inner face. Compared with the Gen 2 the third generation has actually become slightly thicker, though it is lighter: the titanium band weighs just 3.00 g, with a profile of 6.8 x 3.3 mm.

That thickness is the main aesthetic compromise. This is a noticeably chunky ring, and anyone hoping for jewellery that happens to track sleep will find Oura's newer design more discreet.

Ten sizes are offered across the US 6 to 15 range, in five finishes: silver, gold, black, brushed silver and brushed rose gold. A sizing kit is available to establish the correct fit before committing, which is worth using — ring sizing cannot be adjusted after purchase. The ring is rated to 10 ATM, equivalent to a 100 m water column,, and can be worn swimming.

The sensor set covers pulse, blood oxygen and acceleration. Step counting has been improved and is now genuinely accurate: mean step-count accuracy measured 97.6 per cent, with variation between readings of just 0.8 percentage points.

Sleep tracking is the standout. Sleep-phase analysis is now as precise as that of a good smartwatch, which is a meaningful achievement for a device with no display and a fraction of the battery. Breathing is monitored through the night, and body temperature is measured in the background.

One new feature needs stating carefully. The Gen 3 introduces "blood pressure trends", but the ring does not measure blood pressure. It analyses readings that you enter manually into the app, and presents the trend over time. That is a useful record-keeping tool for anyone already monitoring their blood pressure with a proper cuff, but it is not a blood-pressure sensor and should not be bought as one.

The ring can now also deliver vibration alerts, used to flag vital signs that deviate from your baseline and to warn of a low battery. Menstrual tracking is available in the app.

If the ring goes missing it can be located three ways: by its last recorded GPS position in the app, over its Bluetooth connection, or by triggering a light signal on the ring itself.

The companion app runs on both Android and iOS, and every function is available on purchase. There is no subscription — a significant practical difference from the main alternative in this category, where a monthly fee gates much of the analysis.

Active sport tracking is limited to seven modes: hiking, running, treadmill, exercise bike, cycling, rowing machine and yoga. Sessions lasting longer than 10 minutes are at least detected and saved automatically. More than sixty further activities can be logged manually in the app, but that is record-keeping rather than tracking.

Swimming is a conspicuous absence from those seven, given the ring is rated to 10 ATM and can be worn in the water.

The honest framing is that this — like most smart rings — is primarily a health and recovery monitor rather than a training device. Judged on that basis the limited sport list matters much less. Anyone wanting detailed workout metrics should be looking at a sports watch instead.

Battery capacity varies with ring size, since a larger ring has more room for a cell. The size 10 unit carries 15 mAh and ran for a measured 11.5 days — an excellent result, and part of what put it ahead of its closest rival.

The charging case is included in the box rather than sold separately, which is worth noting because competitors have charged extra for the equivalent. It connects over USB-C and holds enough stored charge to top the ring up for several weeks away from mains power. A full charge of the ring itself is quoted at 01:30 — an hour and a half — by the manufacturer.

In the UK the RingConn Gen 3 is listed on Amazon UK at £309.00 and is in stock at the time of writing, in a Royal Gold finish under model number RCA-03. Everything needed is included: all app functionality without a subscription, and the charging case in the box.

The RingConn Gen 3 finished first out of thirteen smart rings, and it earns that placing on substance rather than polish. Measurements are precise, sleep analysis matches what a good smartwatch achieves, battery life of 11.5 days is among the best available, and the absence of a subscription means the purchase price is the whole cost — an increasingly rare position in this category.

The reservations are real but narrow. It is thicker and more obviously a piece of technology than its closest competitor, so anyone prioritising discretion should look elsewhere. The seven active sport modes will frustrate anyone hoping to use it as a training tool. And the blood-pressure trends feature is easy to misread as something it is not.

For its intended purpose — continuous, accurate health and sleep monitoring in a form you can wear indefinitely without thinking about it — this is the strongest option currently available, and the value case against subscription-based rivals is compelling.