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MUNBYN

MUNBYN Smart Ring for Women and Men Fitness Tracker with Sleep Tracking Heart Rate Blood Oxygen Health Reports

4.0(81)
$56.98

50+ bought in the past month

About this item

  • Size Before You Buy: Check your size with sizing chart or buy MUNBYN sizing kit before purchasing the Smart Ring to ensure a precise and comfortable fit, as our sizing standard is different due to built-in sensors
  • Monitor Your Health & Sleep: Wear this health ring to improve your life with daily/weekly/monthly sleep trend reports and analysis of heart rate, sleep stages, activity, and personalized wellness recommendations
  • 4-in-1 Mental Health Tracker: Monitors your mood, stress, fatigue level, and emotion, enabling you to understand your mental health status clearly and make timely adjustments
  • Advanced Health Tracking: Precisely tracking heart rate and blood oxygen every 30 minutes, this fitness ring also predicts menstrual cycles without cloud data upload and provides instant health reports on steps, calories, distance, and heart rate
  • Wear All Day & Night: Ultra-thin, stylish 2 mm smart ring offers all around comfort and convenience in activities like sleeping, jogging, working, excercising, with a durable and waterproof design (IP68/5ATM)
  • 0 App Fees: Compatible with Android and iOS, our App offers 31 functions with zero subscription fees for life when you use our health ring for women
  • More Than Just a Ring: Customize vibration reminders for calls and events to stay on schedule, while using Smart Touch Control to switch slides, take selfies, and control videos with a touch of your finger

Key details

Operating System
Android, HarmonyOS, iOS
Special Feature
Bluetooth
Wireless Communication Standard
Bluetooth
GPS
No GPS
Shape
Round

Dimensions and fit

dimensions
4.25 x 3.7 x 2.24 inches
weight
0.16 Kilograms
package_dimensions
4.25 x 3.7 x 2.24 inches
item_weight
0.16 Kilograms

Technical specifications

item_model_number
SF20250916B0FFMBHKZ4_B0FFMBHKZ4_1_KZYZnR

Item information

Brand
MUNBYN
Style
Elegant
Compatible Devices
Smartphone
batteries
Nonstandard Battery batteries required.
best_sellers_rank
#21,863 in Electronics ( See Top 100 in Electronics ) #61 in Smart Rings
date_first_available
June 26, 2025
manufacturer
MUNBYN
Highlights

About this item

  • Size Before You Buy: Check your size with sizing chart or buy MUNBYN sizing kit before purchasing the Smart Ring to ensure a precise and comfortable fit, as our sizing standard is different due to built-in sensors
  • Monitor Your Health & Sleep: Wear this health ring to improve your life with daily/weekly/monthly sleep trend reports and analysis of heart rate, sleep stages, activity, and personalized wellness recommendations
  • 4-in-1 Mental Health Tracker: Monitors your mood, stress, fatigue level, and emotion, enabling you to understand your mental health status clearly and make timely adjustments
  • Advanced Health Tracking: Precisely tracking heart rate and blood oxygen every 30 minutes, this fitness ring also predicts menstrual cycles without cloud data upload and provides instant health reports on steps, calories, distance, and heart rate
  • Wear All Day & Night: Ultra-thin, stylish 2 mm smart ring offers all around comfort and convenience in activities like sleeping, jogging, working, excercising, with a durable and waterproof design (IP68/5ATM)
  • 0 App Fees: Compatible with Android and iOS, our App offers 31 functions with zero subscription fees for life when you use our health ring for women
  • More Than Just a Ring: Customize vibration reminders for calls and events to stay on schedule, while using Smart Touch Control to switch slides, take selfies, and control videos with a touch of your finger
Close-up view of the MUNBYN Smart Ring for Women and Men Fitness Tracker with Sleep Tracking Heart Rate Blood Oxygen Health Reports
Details

Construction and technical details

Connectivity Technology
Bluetooth
Battery Cell Composition
Lithium Polymer

From the brand

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Product videos

Product video 1

Customer reviews

81 reviewsPositive

Rated 4.0/5 across 81 reviews — well received overall.

  • 25% of sampled reviews rate 2 stars or below.

Customers say

Customers find the smart ring comfortable and easy to set up, appreciating its health features including heart rate monitoring and sleep tracking capabilities. Customers like its quality, with one mentioning it serves as a great alternative to a smartwatch.

Generated from the text of customer reviews

Reviews with images

Customer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Stylish and functional smart ringCustomer review image for Stylish and functional smart ringCustomer review image for AIZO SMART RINGCustomer review image for A lot of functions in a tiny device! Pretty, comfortable and smart!
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★★★★★

Beautiful, Comfortable, and Thoughtful Gift

ought this for my wife as a gift, and she absolutely loves it. The rose gold looks elegant and stylish — more like a real piece of jewelry than a fitness tracker. It fits comfortably and feels lightweight enough for all-day wear, which she really appreciated. The tracking features have been reliable so far. Heart rate, sleep, steps, and oxygen levels all sync easily to the app without a paid subscription. She likes being able to check everything without having to wear her fitness watch all the time. The waterproofing is a huge plus, so she can leave it on while doing routine things like handwashing or showers. Overall, it’s been a great mix of style and functionality — definitely a gift win. Additionally, the sizing guide on the product listing was helpful in buying the right size so refer to that if in between half sizes. ✅ Pros: • Beautiful rose gold finish • Lightweight and comfortable • Accurate daily health tracking • App is simple to use • Great gift option ⚠️ Minor Note: • May take a little adjusting if someone isn’t used to wearing rings regularly Read more

Customer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful GiftCustomer review image for Beautiful, Comfortable, and Thoughtful Gift
Abhi
★★★★★

Stylish and functional smart ring

The media could not be loaded. Very nice smart ring with a clean design. Comfortable to wear, good battery life, and accurate sleep and activity tracking. The app works well and shows useful health data like heart rate and oxygen levels. Great alternative to a smartwatch if you prefer something minimal. Read more

Customer review image for Stylish and functional smart ringCustomer review image for Stylish and functional smart ring
Letmedo.usa
★★★★

Ring

Would be nice to know the size. Bought for my grandson and only fits his little finger . Read more

T. Dorry
★★★☆☆

AIZO SMART RING

I'm not so happy with it kicking off my Bluetooth a lot day 3 and this morning I had to reboot it to get it back working. So I'm really not to happy with it afterwards. But y'all try another brand because if you walk off away from your phone like to the bathroom or outside it will kick it off like the phone has to stay close by all time and when you wake up and wake it up with you, I had a problem with it this morning to get it back on that's why I had to reboot it. Needs a WiFi chip in so the Bluetooth doesn't have to be keeping it on if it's hooked up to its own Internet. I believe that would work better Read more

Customer review image for AIZO SMART RING
Rosalee Hall
★★★★★

A lot of functions in a tiny device! Pretty, comfortable and smart!

The media could not be loaded. I am very impressed with this smart ring. I always wanted to try one and am glad I did. A lot of functions in such a small device. I was surprised how comfortable it is to wear and how pretty the rose gold band is. The ring came well packaged and secure with a small compact charger and easy to follow instructions. I love the magnetic feature of the charger, It makes it very easy to line up the ring for charging. Set up was less then 5 min. I love how I can track my sleep, activity and wellness. I feel with the knowledge this little device brings I can improve my overall life and health. Excellent product and happy to recommend! Read more

Customer review image for A lot of functions in a tiny device! Pretty, comfortable and smart!Customer review image for A lot of functions in a tiny device! Pretty, comfortable and smart!Customer review image for A lot of functions in a tiny device! Pretty, comfortable and smart!Customer review image for A lot of functions in a tiny device! Pretty, comfortable and smart!
Teresa G
☆☆☆☆

Headaches and cheap quality

Poor quality. Notification buzzer isn’t felt unless focused on it. Random emergency dials to 911 because of it. Read more

Daniel J Snyder
★★☆☆☆

Thick Ring

The ring is cheaper compared to other comparables but I found it very thick so I couldn’t keep it on long term. Read more

Kimberly
★★★★★

Thumbs up!

Okay so definitely a big thumbs up for this smart ring. I always wanted a smart ring because it is a good way to get your metrics without having too many distractions like text messages and social media notifications. The app that accompanies the ring allowed me to set some timers and notifications that I tailored to my needs - like a gentle notification to take my vitamins. The notification is a gentle vibration. With the ring I could still track workouts steps, heart rate, blood, oxygen level and more just like on my smart watch but in a more compact easy to wear form factor. I compared the steps on my watch and ring across multiple days and truly there was only a minor difference between the watch and the ring. That also could be because I am wearing the ring on my thumb rather than an index or middle finger as suggested. The only reason I have to wear on my thumb is because I could not find my size, size 10 was the only one available at the time so I chose that so if you have thicker fingers, either wait for your ring size to become available or wear it on your thumb. Read more

Customer review image for Thumbs up!
stephanie
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