RingConn Gen 2 vs RingConn Gen 3

Gen 2’s battery rating depends on your ring size. Gen 3’s depends on whether you leave its new vibration motor switched on.

Gen 2 against Gen 3

Spec	RingConn Gen 2	RingConn Gen 3
Price, 19 September 2026	From $299, out of stock	From $349, on sale
Battery	10 days (sizes 6–7), 11 (8–11), 12 (12–14)	10–12 days with vibration on, 11–14 off
Vibration alerts	No	Health alerts and reminders
Vascular trends	No	Yes
Sleep apnea	Monitoring, with a 90.7 percent accuracy claim	Apnea pattern and risk indicators
Data kept on the ring	5–7 days (7 on RingConn’s comparison chart)	10 days
Charging case	Size-specific; up to 150 days; not sold separately	Universal; about 120 minutes to fill
Sizes	6–14	6–15, Gen 3 kit
Thickness	2.0 mm	2.3 mm
Width	6.8 mm	Not published
Weight	2–3 g	2.5–3.5 g
Water	IP68, 100 m (328 ft)	IP68 and ATM10, 100 m (328 ft)
Operating temperature	Not published	0–40 °C (32–104 °F)
Phone	iOS 17+, Android 10+, Bluetooth 4.0+	iOS 17+, Android 10+
Bluetooth	5.0	Version not published
Finishes	Several colorways	Polished, Brushed, Matte
Subscription	None	None

Battery: your ring size or the motor

The smallest Gen 2s, sizes 6 and 7, are rated for 10 days; sizes 8 to 11 get 11, and sizes 12 to 14 get the 12 days behind RingConn’s “up to 12 days”. If you wear a 6, plan on 10.

RingConn splits Gen 3’s rating by the motor instead of by size. With vibration alerts on, it’s 10 to 12 days; with them off, 11 to 14, so the “up to 14 days” headline assumes a silent ring. Either way you’re charging about every week and a half, and Gen 3’s top figure costs you the alerts.

A magnetic charger fills Gen 2 in about 90 minutes. Gen 3 charges inside its case; refilling the case takes about 120 minutes, and RingConn gives no time for the ring by itself. Offline, Gen 3 stores 10 days of readings to Gen 2’s 5 to 7 (7 on RingConn’s comparison chart).

The motor and vascular trends are new

Gen 3’s motor sits alongside optical heart-rate and temperature sensors and a 3-axis accelerometer, and it taps you only for health alerts and reminders. Gen 2 tracks 24-hour heart rate, blood oxygen, temperature and heart-rate variability, with no motor.

Vascular trends are the other addition. Gen 3 builds them from nighttime patterns, habits and things you enter yourself, and RingConn is clear that they aren’t single blood-pressure readings. Neither ring gives you a cuff number.

Gen 3’s activity list also includes VO2 Max and respiratory rate, which its FAQ counts as a 24-hour reading and RingConn’s comparison chart files under nighttime monitoring. Gen 2’s own list covers steps, calories, workouts and 24-hour vitals.

Sleep apnea on both, in different words

Apnea isn’t what you’d upgrade for. Gen 2 already logs REM, light and deep sleep plus naps, and it watches for sleep apnea, with a 90.7 percent accuracy figure that comes from RingConn rather than a clinic; running that monitoring may drain the battery faster. Gen 3 covers sleep duration and stages and shows an apnea pattern with risk indicators, without the 90.7 percent figure. Gen 2 Air, the cheaper sibling, is the one with no apnea feature.

Only Gen 3 carries RingConn’s not-a-medical-device disclaimer, but the caution fits Gen 2’s apnea monitoring just as well: treat either ring’s readings as a pattern worth knowing about, not a sleep study.

Gen 2 is the slimmer ring

At 2.0 millimeters thick, 6.8 wide and 2 to 3 grams (RingConn’s marketing quotes 2), Gen 2 is the slimmer and lighter ring, in titanium alloy coated with PVD and finished in medical-grade epoxy. Gen 3 swaps the alloy for metallic titanium, again with medical-grade epoxy and PVD, and is the thicker, heavier ring on paper at 2.3 millimeters and 2.5 to 3.5 grams.

Gen 3 offers Polished, Brushed and Matte finishes; Gen 2’s page listed colorways, all sold out.

New kit, new case

Sizes 6 to 14 appear for both rings, but the kits differ. Gen 2 shares its kit with Gen 2 Air. Gen 3 brings its own kit and a size 15, and RingConn warns that Gen 3 sizing matches neither its older rings nor jewelry sizes. Wearing a 9 in Gen 2 doesn’t make you a 9 in Gen 3.

The case changed as well. Gen 2’s comes in the box with a USB-C cable and manuals, fits one ring size, and RingConn claims it keeps the ring going for up to 150 days; it isn’t sold separately, and a replacement is a charging dock. Gen 3’s case is universal, so it charges every RingConn size, and your old Gen 2 case will still charge a Gen 3 ring of the same size.

Price, stock and phones

On 19 September 2026 Gen 2 was sold out, with a starting price of $299; Gen 3 started at $349 and was available. Check both rings’ pages for stock and for the right sizing kit before you buy.

Phone support is the same, iOS 17 and Android 10 onward, though Gen 2 spells out a Bluetooth 4.0 phone and its own Bluetooth 5.0 radio. Gen 3 adds an ATM10 rating to the IP68 and 100 meters (328 feet) both rings share.