Mayissi Smart Ring with Sleep Monitoring-No Subscription-15-Days-Battery-Standby-time-Activity-Health Management--Waterproof-iOS & Android- RoseGold

Product Overview

Some people want their health data without a screen on their wrist. The Mayissi R02 answers that with a closed band of polished rose gold, its optical sensor window set into the inner face so the readings are taken where the skin is. Put it on in the morning and it works as a ring activity tracker for the ordinary parts of a day — steps, distance and calories — without asking you to start a workout first. Everything it records travels over Bluetooth to the Mayissi app on an iPhone or an Android phone, where the numbers become a morning sleep report or an evening training record. The same rose gold body is offered as a smart ring for women and for men, in four sizes, and at 3 to 4.4 grams it disappears on the hand within a day. The finish is polished rather than matte, so it passes as jewellery at a desk and still keeps up in a training session. Nothing needs waking, checking or dismissing while you wear it. 1. A morning run. Choose the outdoor mode before you head out; the ring records the session's duration, distance, calories and heart rate, and the record is waiting in the app when you get back. This is the kind of session that makes a smart ring fitness tracker worth wearing. 2. A gym session, then a swim. Multiple sports modes cover more than running, and the ring can stay on in the pool instead of sitting in a locker between sets. 3. A working day at a desk. No screen catches the eye during a meeting, and the gesture control earns its keep on the commute — skipping tracks and turning e-book pages without reaching for the phone. 4. Overnight. Worn as a smart ring sleep tracker, it stays on through the night and hands over a stage-by-stage report in the morning. 5. A weekend of errands. Steps, distance and calories keep counting on the ordinary days that never look like training, which is where a ring activity tracker is more honest than a workout log. 6. A stressful stretch. Heart rate variability and stress readings show which days cost more, and the short meditation sessions in the app give you something to do about it. 7. A gift. The rose gold finish and four sizes make it easy to give, and the same design is bought as a smart ring for women and for men.

Product Advantages

• Nothing to tap, nothing to light up. There is no display and no glowing screen, so this ring activity tracker never interrupts a meeting or a night's sleep the way a watch can. - Multiple sports modes, actually used. Choose the mode that matches your session and the ring records its duration, mileage, calories and heart rate — the numbers a smart ring fitness tracker is bought for, without a chest strap. - Gesture control for the phone in your pocket. Play or pause music, flick between short videos and turn the pages of an e-book with a small movement of the hand wearing the ring. - Extras that earn their place. A ring finder for the mornings it goes missing, a remote shutter for phone photos, and a small games section in the app for idle minutes. - One design, a wide range of hands. The flat band sits comfortably on slim and broader fingers alike, so it holds its own among smart rings for men and never looks like a borrowed gadget on a woman's hand. - Light enough to forget. The band is built to disappear on the hand, so it stays on through sleep, showers and long days without a second thought.

Precision Health Monitoring

The sensors in the R02 are not there for a single number. A multi-sensor array on the inner face picks up heart rate, blood oxygen saturation and heart rate variability through the day and night, and the app layers those readings into trends rather than one-off figures. That is what turns a health tracking ring into something you can act on: a run that cost more recovery than expected, a week where resting heart rate crept up, a night that ended too early.

Sleep is where the detail shows. Each morning the app breaks the night into deep, light and REM stages, notes how long you were awake, and points at the moments that interrupted you. Across several nights it starts to predict the bedtime that suits you, and it keeps the history so a bad night can be compared with the good ones around it. You do not have to read every chart — the summary at the top is usually enough.

Stress and breathing readings come from the same optical data. Blood oxygen saturation and heart rate variability are the two figures most people ignore until they start tracking them, and the app pairs them with short guided meditation sessions. Over-the-air updates arrive through the app, so this wearable smart ring's feature set can grow after it is on your finger. The sleep and wellness analysis behind these readings was developed with leading universities and hospitals — a fair signal of how carefully the data is handled, though as a smart ring health tracker it is built for everyday awareness rather than diagnosis.

Durability & Connectivity

• 5ATM water resistance. That rating covers everyday wear, workouts and swimming, so washing your hands, walking through rain or swimming laps is not a reason to take the ring off. It is a static pressure rating rather than a dive depth, and hot water, saunas and steam rooms are worth avoiding because heat is hard on the seals of any sealed wearable.
• Swim sets still get counted. Because the ring stays on in the water, a pool session is recorded as a session rather than guessed at afterwards — it carries on as a ring activity tracker in conditions where most trackers are left on the poolside bench.
• Bluetooth pairing. The ring talks to your phone over Bluetooth, so data reaches the app without a cable between the ring and the handset; the charging cable is only for power.
• Rated for real temperatures. The ring operates between 0 °C and 50 °C, which covers a cold morning run and a hot car park without drama.
• A health tracking ring that meets real life. Sweat, sunscreen, chlorine and hand cream all end up on a ring; rinse it in fresh water after a swim and dry it before wearing it again.
• Keeping this wearable smart ring accurate. The optical window sits on the inner face where skin oils collect, so a wipe with a soft, damp cloth now and then keeps both the readings and the rose gold finish in good shape.

Size & Fit

1. Measure at the end of the day. Fingers swell slightly over the course of a day and in warm weather, so an evening measurement is the one that will still fit at dinner.
2. Use the Mayissi sizing chart, not a jewellery size. Mayissi rings follow their own sizing standard, so the number printed inside an existing ring is not a safe shortcut — measure the finger and read the chart.
3. Four sizes. The R02 comes in sizes 8, 9, 10 and 11, which covers most hands; the chart is the quickest route to the right one.
4. It has to clear the knuckle. A ring that will not pass over the knuckle is the wrong size however comfortable it feels at the base, so slide it on and off before settling on an option.
5. Expect a firmer feel than a thin band. The wide, flat outer face of this wearable smart ring sits across more of the finger than a slim ring of the same size, so choose a fit that is snug without pinching.
6. Which finger. The index or middle finger of the non-dominant hand is the usual choice — less contact with desks and keyboards, and a steady seat for the sensor window.
7. A shape that suits a smaller hand. The flat profile sits cleanly without swallowing the finger, which is why it is bought as a smart ring for women without looking like a scaled-down men's device.
8. Larger hands too. The upper sizes fit broad fingers comfortably, so the same design works as one of the smart rings for men rather than needing a separate model.

Comfort, Design & Battery Life

Purchase & Packaging

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.

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