Smart Ring for Women & Men, Health Tracker Ring with Heart Rate, Blood Oxygen, Blood Pressure, IP68 Waterproof Fitness Ring, Sleep Tracker for iPhone and Android (Silver)
Quick take
This UniJethro smart ring (R11M) focuses on everyday health and fitness tracking without a screen, using optical sensors and an accelerometer to monitor metrics like heart rate, blood oxygen, blood pressure, and sleep. It’s a good fit if you want a lightweight ring that’s meant to be worn all day and handled through normal handwashing, plus you prefer an app without an ongoing fee. The biggest buying caveat is that app stability and correct sizing can make or break the experience.
Pros and cons
Pros
- Tracks multiple health and recovery metrics, including heart rate, blood oxygen, blood pressure, and sleep.
- Activity tracking features include steps, calories burned, and distance, plus exercise support (like running and cycling).
- Comfort-forward design with resin plus stainless steel materials, no display, and an IP68 rating for water and sweat resistance.
- Multi-day battery life, with about 3 to 5 days for regular use and longer standby time.
- No app subscription fee is positioned as a key advantage.
Cons
- App performance can be inconsistent, including reports of the app freezing when other apps are open.
- Correct sizing matters, and availability of the exact size can be a limitation if you end up between sizes.
- There is no on-ring display, so you rely on the phone app for current data and trends.
What buyers think
Buyer-review evidence points to a generally comfortable, lightweight fit that is easy to wear all day, including during routine activities like work and exercise. Several buyers highlight that setup and phone connectivity are straightforward, and that the ring tracks daily activity such as steps and workouts. Comfort and durability come up repeatedly, with users also mentioning it continues working after normal exposure like rainy weather and handwashing.
App experience is the main theme where expectations vary. Overall, the review evidence is limited, but comfort, daily tracking, and app usability form the strongest patterns.
Key features and what they mean day to day
Health and sleep metrics
The ring uses built-in optical sensors to monitor heart rate, blood oxygen, and blood pressure, and it also provides sleep analysis. If your goal is to understand patterns in sleep and overall recovery, this is the type of feature set that can replace the need to wear a bulkier tracker during the night.
Activity tracking without a screen
Instead of a display, you get activity insights via your phone. The ring is designed to track steps, calories burned, and distance, and it supports monitoring for activities like running, cycling, and yoga. It also includes an accelerometer (SC7A20H) to help interpret movement.
Battery life designed for regular wear
Expect roughly 3 to 5 days of regular use, with standby time reported up to 7 to 10 days. The practical implication is fewer charging routines compared to daily-charge wearables, as long as your usage pattern stays within that typical range.
Water resistance for everyday life
With an IP68 rating and a water-resistance depth listed at 1.5 meters, the ring is built to handle sweat and typical water exposure such as handwashing. It is not the same as being designed for extended water sports, so consider your specific routine, but day-to-day water resistance is a clear priority here.
Pros and cons in plain English
Best for
- People who want an all-day wear smart ring for sleep and general health trend tracking.
- Shoppers who prefer sensor-based insights (heart rate, blood oxygen, blood pressure) over a device with a visible screen.
- Users who care about staying within a budget-friendly category, while still wanting multi-metric tracking.
- Anyone who wants an option that emphasizes no app subscription fee.
Who should pause before buying
- Buyers who are very sensitive to app stability and want consistently smooth performance, without any freeze or slowdown risk.
- Shoppers who might struggle with sizing and do not want the hassle of trying different fingers or sizes.
- People who want quick, glanceable in-hand data without opening an app.
Price and availability
The ring is priced in the budget smart ring range (with a significantly higher list price shown). Availability is listed as in stock in the storefront context, so the main practical variable is whether you can get the exact size you need (this matters because the ring’s fit affects comfort and sensor placement).
How it compares to other smart rings (by buying criteria)
Since smart rings are a category of small, sensor-based trackers, the most useful comparison is not “brand vs brand,” it’s whether the ring matches your priorities:
- If you want more than one health metric: This ring combines heart rate, blood oxygen, blood pressure, and sleep analysis, so it fits buyers who want a wider sensor mix rather than just sleep and steps.
- If you care about all-day comfort: The lightweight, no-display design and resin plus stainless steel build are aligned with everyday wear.
- If you care about battery and convenience: Multi-day battery life and a charging case approach reduce how often you need to charge.
- If you’re app-focused: App reliability matters. The available feedback includes a note about the app freezing when other apps are open, so plan to keep the app experience in mind.
Verdict
UniJethro’s R11M smart ring is a solid choice if you want a comfortable, water-resistant smart ring that tracks sleep and multiple health metrics, while keeping costs down and avoiding an app subscription fee. If you’re strict about app smoothness or you know sizing is tricky for you, take extra care before ordering. For buyers who want a lightweight ring for day-to-day trends, it can be a practical step into smart ring tracking.
Ready to check the current offer and confirm your size? Buy on Amazon
FAQ
Does this smart ring show data on the ring itself?
No. It is a no-display smart ring, so you view current and historical information in the app.
What does the ring track?
It’s designed to monitor heart rate, blood oxygen, blood pressure, and sleep analysis. It also tracks activity including steps, calories burned, and distance.
How long does the battery last?
Battery life is listed at about 3 to 5 days for regular use, with up to 7 to 10 days in standby mode.
Is it waterproof?
It has an IP68 rating and is described as protected against sweat and water exposure such as hand washing. Water resistance is rated at 1.5 meters depth.
Is there an app subscription fee?
The product positioning states there is no app subscription fee.
Will it work with both iPhone and Android?
It’s listed as compatible with Android and iOS.
Is sizing important?
Yes. If you’re between sizes, consider trying the recommended finger and size approach.
Specifications
| Product Title | Smart Ring for Women & Men, Health Tracker Ring with Heart Rate, Blood Oxygen,Blood Pressure, IP68 Waterproof Fitness Ring, Sleep Tracker for iPhone and Android, No APP Fee (Silver, 10#) |
|---|---|
| Category | Electronics > Wearable Technology > Rings |
| Brand | UniJethro |
| Manufacturer | Unijethro |
| Model Name | R11M |
| Model Number | R11M |
| Color | Silver |
| Operating System | Android, IOS |
| Additional Features | Remote Photography, Family Care, Blood Pressure Monitor, Fitness and Activity Tracker, Blood Oxygen Monitor, Heart Rate Monitor, Sleep TrackerFitness and Activity Tracker, Sleep Tracker |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Band Material Type | Resin, Stainless Steel |
| Water Resistance Level | Waterproof |
| Sport Type | Cycling, Diving, Fitness, Hiking, Multi-Sports |
| Supported Application | Fitness Tracker, Social Media, Camera |
| Water Resistance Depth | 1.5 Meters |
| Metrics Measured | Heart rate, sleep, sleep patterns, blood oxygen, blood pressure, wave-to-snap, family care |
| Shape | Round |
| Style Name | Modern |
| Battery Capacity | 300 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Average Life | 5 days |
| Display Type | No Display |
| Memory Storage Capacity | 32 MB |
| Target Audience | Unisex Adults |
| Age Range Description | Adult |
| Built-In Media | Charging Cable, Charging Case, Ring Protector, Smart Ring, User Manual |
| Warranty Description | 2 Year Manufacturer |
Available variants
Color
- Rose Gold
- Silver
- Green
- Blue
- Lavender Pink
- Gold
- Black
- Orange
Size
- 13#
- 14#
- 6#
- 7#
- 8#
- 12#
- 10#
- 9#
- 11#
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