Product Overview
The Mayissi AI Insights ring in black is a screenless smart ring health tracker for people who want their numbers without a watch on the wrist. As a wearable smart ring it is deliberately quiet: no screen, no vibration, no glowing display on the bedside table. The black band sits beside an ordinary ring without drawing attention, which is why it works for office days, dinners and travel as well as workouts. The band is thin and light enough to forget during the night, which is the point for a smart ring sleep tracker — a ring to track health that comes off at eleven in the evening tells you almost nothing about how you slept. Everything about this health tracker ring is set up and read in the app. Pair it once, and after that there is nothing to press, no menu to scroll and no mode to switch in the middle of a session. Mayissi uses unique sizing standards. Please refer to the detailed sizing chart before ordering to find the perfect fit and avoid the inconvenience of returns.
Health Signals It Records
- Sleep stages, night after night. Deep, light and REM sleep are logged separately, along with the time you actually fell asleep, so the morning report shows how rested you were rather than how long you lay in bed. Give this smart ring sleep tracker four or five nights before you read much into a single one.
- Heart rate and HRV. A continuous pulse reading and heart rate variability show whether your body is carrying load or recovering. A smart ring health tracker reads both at the finger, where the signal is strong and steady.
- Blood oxygen (SpO2). Oxygen saturation is sampled overnight and through the day, so nights when your breathing pattern changed stand out instead of blending into the average.
- Stress load. Heart rate variability and movement are turned into a stress curve, which makes it easier to see which meetings, workouts or late nights actually cost you something.
- Body temperature and cycle patterns. Temperature shifts are tracked alongside menstrual cycle data and cycle reminders, which is why the ring also works as a smart ring for women who want training and sleep advice to follow the phase they are in.
- Daily movement and sports modes. Steps, distance and calories are counted through the day, and multi-sport modes cover walking, running, cycling, climbing and golf — the kind of session log a smart ring fitness tracker needs in a training week.
- Guided meditation. Five meditation modes run from the app with live heart-rate feedback, so a breathing exercise has something to aim at instead of being a timer.
- Daily and weekly scores. Each day is condensed into one score and each week into a trend, so the numbers arrive as a direction rather than a wall of raw data.
AI Insights and the App
The analysis behind this smart ring sleep tracker was developed with universities and hospitals, and it looks at far more than the hours you slept. Every night the model reads heart rate, heart rate variability, blood oxygen, body temperature, movement and stress load, then looks for the likely cause of a rough night: a late meal, a hard training day, a warm room or a bedtime that drifted.
On the phone, the app is where the data becomes readable — a morning summary, a stress curve across the day, a weekly trend line and plain-language notes instead of raw sensor noise. It also works out whether you lean towards being a morning person or a night owl, then suggests a bedtime window that fits the pattern it sees. Updates reach the ring over the air, so new features arrive without new hardware, and the app is a normal App Store or Google Play download.
Wearing something every night is the real test, and a ring to track health with no strap, no buckle and no screen has an advantage: nothing to charge before bed, nothing to take off, nothing to distract you at two in the morning. There is also no subscription attached to the ring, so the tracking features are not held behind a monthly plan. And the data is not aimed at one kind of wearer — the cycle and temperature features matter to some owners and stay quiet for others, which is why the black band is worn as a smart ring for women and men alike.
Comfort, Design & Battery Life
| Finish | Black band with a clear inner window over the optical sensor |
| Weight | Around 2.5 g |
| Profile | Ultra-thin, screenless band |
| Night wear | No light, no vibration, no display |
| Charging | Magnetic charging case |
| Full charge | About 1 hour |
| Battery per charge | Up to 7 days of typical use |
| Standby | Up to 15 days |
| With the charging case | Total use can extend beyond 150 days |
Water Resistance & Connectivity
- 5ATM water resistance. The band is sealed and rated 5ATM, so a health monitoring ring can stay on through hand washing, showers, rain, sweat and a swim in the pool.
- Finger-based sensing. The optical sensor reads through a clear inner window pressed against the base of the finger, where blood vessels sit close to the skin. That is how a band this small still picks up a usable pulse and blood-oxygen signal.
- Bluetooth pairing. The ring talks to your phone over Bluetooth, so the wearable smart ring hands its data to the app without a dock or a cable in between.
- GPS from the phone. Route and distance come from your phone's GPS, which means a smart ring fitness tracker can log an outdoor walk, run or ride without a second device strapped to you.
- Operating range. Rated for 0 °C to 50 °C, which covers a cold morning walk, a hot shower room and everything between.
- What 5ATM does not cover. Diving, high-pressure water jets and hot tubs sit outside the rating. Rinse the band in fresh water after a swim in the sea or a chlorinated pool.
- No buttons, no menus. Every setting lives in the app, so there is nothing to press and one less seal to worry about.
- Wellness readings, not a diagnosis The Mayissi AI Insights ring is a consumer wellness device, not a medical device. It does not diagnose, treat or rule out any condition, and it does not replace a clinical test. There is no ECG here and no sleep-apnoea detection — what this health monitoring ring records is heart rate, heart rate variability, blood oxygen, body temperature, stress and your sleep stages, then shows how those readings move against your own baseline. An overnight SpO2 figure is a pattern to watch, not a clinical oxygen measurement, and the scores in the app are meant to prompt a useful question rather than answer it. On the finger, day and night The band is built for continuous skin contact: around 2.5 g, sealed to 5ATM, with a finish made to shrug off the knocks of daily wear. The clear inner window over the optical sensor has to stay clean, because a smear of moisturiser or sunscreen dulls the signal more than most people expect. Wipe it with a soft dry cloth, rinse the ring in fresh water after a swim or a sweaty session, and let it dry before it goes back on your finger or into the charging case. If the skin underneath feels itchy or looks irritated, take the band off, let the finger rest overnight and put it back on once things have settled. The 5ATM rating covers showers and pool swimming; it does not cover diving, hot tubs or a high-pressure jet, and the ring is rated for use between 0 °C and 50 °C. When to talk to a professional If something keeps repeating — nights that stay broken, a resting pulse that climbs week after week, a temperature shift that does not fit your cycle — bring the app's trend view to a doctor instead of relying on the ring's own summary. That is the honest role of a health tracker ring: it gives you observations specific enough to describe out loud, and it leaves the diagnosis to someone qualified to make it.
Sizing & Fit
- Measure late in the day. Fingers are largest in the evening and smallest on waking, so a measurement taken at night gives you a band that still fits at breakfast.
- Use the Mayissi sizing chart, not your jewellery size. The ring to track health is built to Mayissi's own sizing standard, which does not line up with ordinary ring sizes, so match your measurement in millimetres to the chart.
- Measure the exact finger you will wear it on. The index, middle and ring fingers are the usual choices; if you are shopping for a smart ring for women in a smaller size, measure that finger rather than assuming a standard women's ring size.
- Check that it clears the knuckle. A health monitoring ring has to pass over the joint and then sit snug at the base — if it slides off easily or pinches, move one size.
- Between two sizes, go up. A band that leaves a mark is harder to live with than one with a little room, and the sensors still read reliably as long as the ring does not spin freely on the finger.
What's in the Box
The health monitoring ring arrives with its magnetic charging case, a charging cable and a printed user manual. Pair it with the app while it is still in the case, then leave it there to top up before your first full night.
The first week is mostly about letting the health tracker ring learn a baseline. Wear it overnight, open the app in the morning to sync, and let the first week pass before you read much into any single score.
Nothing else is needed to get started: the wearable smart ring, its case and the app on your phone are the whole setup. Keep the manual — it carries the sizing chart and the support details you may want later.
Ordering & Delivery
- Confirm the variant before checkout. This is the black AI Insights ring; the same family also comes in silver and gold, so check that the finish in the product images matches the one you want.
- Ask about the delivery window for your address. Shipping times and any import duties depend on where you are ordering from, and our team can confirm what currently applies to your country.
- Check the returns and warranty arrangement for your region before you buy. Fit is the most common reason a ring goes back, so it is worth knowing the process in advance rather than after it happens.
- Keep your order confirmation. It carries the details that make an exchange or a repair simpler if your health tracker ring needs attention later.
About Our Company
Mayissi is the smart-ring brand of Tide Forge Tech, a health-monitoring technology company based in Shenzhen High-Tech Park (Nanshan), China, established in 2026. Our team of ten designs, develops and builds wearable health-tracking devices that are sold to customers worldwide. Because research, design and production sit under one roof, we can watch quality at every stage, from sensor performance to the finish you wear. Every customer receives clear setup guidance and responsive after-sales support, with our team reachable around the clock.
FAQ
How accurate is the ring for health monitoring?
It is built for trends rather than single readings. A multi-sensor array on the inside of the band records sleep stages, heart rate, heart rate variability, blood oxygen and stress continuously, and the app compares each night and each week against your own baseline — which is where a smart ring health tracker earns its place. Expect small night-to-night variation; the direction over two or three weeks is what tells you something.
Can I use it with both iPhone and Android?
Yes. The smart ring sleep tracker pairs over Bluetooth with iOS and Android phones, and the same app is used on both, so switching handsets is a matter of installing it again and signing in. Pairing takes a minute the first time and the ring keeps recording in between, so you do not lose a night while you set it up.
Does the ring need a subscription or ongoing fees?
No. The purchase covers the hardware and there is no subscription attached to the ring: sleep, heart rate, stress, activity and the rest of the tracking features are available without a monthly or annual plan. Your own history stays readable in the app rather than sitting behind a paywall.
Can I wear it during exercise and in the water?
Yes. The 5ATM rating covers sweat, showers and swimming in a pool, and the smart ring fitness tracker records multi-sport sessions alongside steps, distance and calories through the day. Leave it off for diving, high-pressure water jets and hot tubs, and rinse it in fresh water after a chlorinated or salt-water swim.
Is this a medical device? Can it diagnose sleep problems?
It is a health monitoring ring for everyday wellness, not a medical device, and it does not diagnose or treat conditions such as sleep apnoea. What it does well is show patterns — how your sleep stages, heart rate and stress move across weeks — so if something worries you, you can bring real observations to a doctor instead of a vague feeling.
