UniJethro Smart Ring for Women & Men, Health Tracker Ring with Heart Rate, Blood Oxygen, Blood Pressure, IP68 Waterproof Fitness Ring
Quick take
UniJethro’s smart ring is a lightweight, no-display health and fitness tracker designed for all-day wear, with optical sensors for heart rate, blood oxygen, blood pressure, and sleep tracking. It’s built for everyday durability (IP68) and aims for 5-7 days of regular battery performance. The main buying caveat is fit, since some buyers report limited available sizes, and app behavior can be sensitive when your phone is multitasking.
Pros and cons
Pros
- Comfortable, lightweight ring designed for all-day wear (about 3.5 grams) and a resin plus stainless steel build.
- Broad health and activity coverage, including heart rate, blood oxygen, blood pressure, sleep analysis, steps, calories, and distance (with SC7A20H accelerometer).
- IP68 water resistance for sweat and water immersion during hand washing, plus practical activities like running and yoga.
- No app subscription fee is positioned as part of the experience.
Cons
- Size availability can be limiting, so it may be harder to find a perfect fit.
- Some users note the app may freeze if too many apps are open, which can affect day-to-day monitoring.
- No display means you rely on the phone app for readouts and trends.
What buyers think
Buyer-review evidence is generally positive but focused on a few recurring themes. Comfort and everyday wear show up most often, with users describing the ring as lightweight, not intrusive during work or exercise, and easy to keep on. People also tend to like the breadth of metrics for the price, including daily activity tracking and the health readings (heart rate, oxygen levels, and blood pressure). Setup and connectivity are commonly described as straightforward, and battery life is frequently mentioned as a strength. The most consistent concerns in the available reviews are limited size options and occasional app freezing when multitasking.
What you get and what it’s designed to do
This smart ring is built around optical sensing plus motion tracking. It targets health and lifestyle metrics rather than displaying them on the ring itself, so the experience centers on syncing data through the companion app. Key measurement areas include heart rate monitoring, blood oxygen readings, blood pressure monitoring, and sleep analysis. For day-to-day movement, it uses an accelerometer to estimate steps, calories burned, and distance, and it includes activity modes like running, cycling, and yoga.
Comfort and daily wear
At roughly 3.5 grams and constructed with a resin plus stainless steel case, the ring is positioned for comfortable, secure all-day wear. In buyer feedback, comfort and fit are major reasons people keep using it, including for both men and women. If you get the size right, users describe it as something you can wear through work and exercise without it getting in the way.
Health and sleep tracking: the practical feature set
The measurement list is broad for the category: heart rate, blood oxygen, blood pressure, and sleep tracking. For sleepers who want trends over time, the value is less about real-time readouts and more about having consistent data you can review in the app. Fitness tracking focuses on movement totals (steps, calories, distance) and activity modes, which can be helpful if you want a simplified overview of how different workouts affect your day.
Battery life and charging
Battery performance is rated at approximately 5-7 days of regular use, with up to 7-12 days in standby mode. A built-in charging approach is part of the overall setup, and buyers specifically call out the charging station as portable and convenient for quick top-ups. Because the ring has no display, battery management matters most for keeping uninterrupted overnight sleep tracking and consistent daily totals.
Water resistance and durability
UniJethro lists IP68 water resistance, which is intended to protect against sweat and water immersion during hand washing. This makes the ring more suitable for everyday life where moisture is unavoidable, like workouts and daily routines. If you plan to treat the ring like a dive computer or for frequent high-impact water sports, you’ll still want to be cautious, since IP ratings do not automatically mean it’s designed for every situation.
App experience, compatibility, and connectivity
The ring works with iPhone and Android and syncs through a dedicated app (SmartHealth). The app can sync data to Apple Health, and it includes features such as remote photo control and health data sharing. One tradeoff mentioned in reviews is that the app may freeze when your phone is running too many other apps. If you tend to multitask heavily or keep lots of apps open, consider closing unused apps before expecting stable syncing.
Size and styling considerations
The ring comes in multiple sizes, but buyers have flagged limited size availability as a real-world issue. It’s also designed to look like a modern fashion ring, with a green color option referenced in this model and a gold finish noted by a buyer. If you are between sizes or have narrow options nearby, you may want to double-check sizing before ordering.
Pros and cons summary
- Best for: shoppers who want a lightweight smart ring that covers sleep plus core health metrics (heart rate, blood oxygen, blood pressure) and daily activity totals, with a focus on comfort and everyday water resistance.
- Not ideal for: buyers who need a large range of size options, or anyone expecting flawless app behavior while multitasking, or those who prefer instant readouts directly on the ring.
- Overall verdict: It’s a feature-rich entry to the smart ring category at a budget-friendly price point, especially if comfort and “set it and sync” health tracking are your priorities.
How it compares by buying criteria (without naming specific rivals)
If you’re deciding between smart rings, compare options using these criteria rather than focusing only on sensor lists:
- Comfort and fit range: If sizing availability is limited, your experience can suffer, even when features are strong.
- Battery expectations: Look for ratings around your usage pattern. Sleep tracking means you’ll notice battery drops faster.
- Water resistance and real-world durability: IP ratings are helpful, but confirm how the manufacturer frames immersion and everyday wear.
- App stability: If reviews mention freezing or syncing issues under multitasking, plan for simpler phone usage or choose a model with stronger app reliability signals.
- Value vs. feature depth: Many rings offer similar headline metrics, the differentiator is usually how consistent the app experience and data syncing feel.
Price and availability
Check current pricing and availability before you buy, since smart ring prices can fluctuate. Buy on Amazon
FAQs
Is this smart ring compatible with iPhone and Android?
Yes. The ring is listed as compatible with iPhone and Android phones, using the SmartHealth app for setup and syncing.
Does the ring have a screen?
No. It’s a no-display smart ring, so you view readings and trends in the companion app.
How long does the battery last?
Battery life is rated at approximately 5-7 days of regular use, with up to 7-12 days in standby mode.
Is it waterproof?
It’s rated IP68, which is intended to protect against sweat and water immersion during hand washing.
What health metrics does it track?
It tracks heart rate, blood oxygen, blood pressure, and sleep analysis.
Does it cost extra for the app?
No app subscription fee is positioned as part of the experience.
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 (Green, 7#) |
|---|---|
| Category | Electronics > Wearable Technology > Rings |
| Brand | UniJethro |
| Manufacturer | Unijethro |
| Model Name | R11M |
| Model Number | R11M |
| Color | Green |
| Item Weight | 3.5 Grams |
| Operating System | Android, IOS |
| Additional Features | Data can be synced to Apple Health, Fitness and Activity Tracker, Blood Oxygen Monitor, Heart Rate Monitor, Sleep TrackerFitness and Activity Tracker, Sleep Tracker, Remote Photography, Family Care, Blood Pressure Monitor |
| GPS Geotagging Functionality | GPS Via Smartphone |
| Band Material Type | Resin, Stainless Steel |
| Water Resistance Level | Waterproof |
| Sport Type | Cycling, Diving, Fitness, Hiking, Multi-Sports |
| Human Interface Input | Unknown |
| Supported Application | SmartHealth |
| Water Resistance Depth | 100 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 |
| Warranty Type | Limited |
| Waterproof Rating | IP68 |
| Target Audience | Unisex Adults |
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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