Smart Ring for Men Women, Health Fitness Tracker with Heart Rate/Blood Pressure/Blood Oxygen Monitor,Sleep Tracker,Pedometer, No Subscription, IP68 Waterproof Ring for iPhone&Android (Black, Size9)
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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 2 left in stock, order soon!
Arrives
Sep 2 – Sep 23
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Size: 9
Color: Black
Features
- Real-time Health MonitoringThe smart ring has the latest sensors that can track heart rate, blood oxygen, blood pressure and other data in real time 24 hours a day. It can also monitor sleep quality, record deep sleep, light sleep, eye movement and wakefulness. You can view various indicators anytime and anywhere on the application "ECTRI" and adjust your lifestyle based on daily/weekly/monthly reports.
- Multiple Sports Modes & Activity TrackingThis fitness tracker supports multiple sports modes, including common daily exercises such as running, cycling, walking, skipping, swimming, etc. It can also record your steps, exercise distance, activity trajectory, calorie consumption and other exercise data. You can set exercise goals in advance, make a reasonable exercise plan, and improve your exercise efficiency.
- Gesture Control & Convenient FunctionsThe smart ring enables remote control for taking photos, flipping e-book pages, switching short videos, and pausing or playing music. With a simple double-tap of your finger in the air, enjoy effortless air gesture control. This intuitive feature frees your hands and makes everyday tasks more convenient and efficient.
- Fast Charging & Wide CompatibilityThis ring can be charged in two ways: with a charging cable and with a charging box. It only takes 60 minutes to fully charge. Under normal circumstances, it can be used for 3-5 days and has a standby time of 7-10 days. It is also widely compatible and can be paired with phones running Android 6.0 or iOS 11.0 or above.
- IP 68 Waterproof & Comfortable MaterialThis sports ring provides IP68 waterproof protection, and you can use it with confidence without taking it off when washing hands, swimming and taking a bath. Made of epoxy resin and stainless steel, it is comfortable and lightweight to wear, without any foreign body feeling, ensuring all-day wearing comfort and durability.
- Various Size & Excellent GiftThis fitness ring is available in a variety of sizes. You can measure the circumference of your finger and refer to our size recommendations to choose the size that suits you. No matter which size you choose, its thinness and weight will make you hardly feel its presence when using it. The ring has a sophisticated and fashionable design and is also a great gift for your partner/family/friends.
Operating System: Android&iOS
Memory Storage Capacity: 64 MB
Special Feature: Step Counter, Blood Pressure Monitor, Calorie Consumption, Music/Camera Control, Activity Tracker, Gesture Control, Heart Rate Monitor, Sleep Tracker See more
Battery Capacity: 18 Milliamp Hours
Connectivity Technology: Bluetooth
Wireless Communication Standard: Bluetooth
Battery Cell Composition: Lithium Ion
GPS: GPS Via Smartphone
Shape: Round
Screen Size: 9 Centimeters
Product Dimensions: 10.24 x 3.15 x 0.67 inches
Item Weight: 2.68 ounces
Item model number: R6
Batteries: 1 AAA batteries required. (included)
Date First Available: April 21, 2025
Manufacturer: FFFITNES
Item Weight: 76 Grams
Standing screen display size: 9 Centimeters
Memory Storage Capacity: 64 MB
Ram Memory Installed Size: 64 MB
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 2 – Sep 23
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
I'm honestly surprised with this product to the say the least. I have an Apple watch and wear it daily, so that is how I track my fitness and vitals during the day, but I wanted to track heart rate and sleep quality at night but found it uncomfortable to wear my watch while sleeping. I also usually charge my watch at night, so I started looking for an alternative. I found this for a surprisingly low price and decided to give it a try, and I'm glad I did! The heart rate and SpO2 are accurate when compared to my watch and to a pulse oximeter. I was skeptical about the blood pressure reading, but to my shock, it was accurate too when compared to an electric BP cuff and a manual sphygmomanometer. I have no idea how it works, and it don't know if it works while exercising (I only wear this while sleeping) but it's certainly impressive. The app is decent and can write data in my Apple health app, but it could definitely use a few minor updates. For example, it doesn't take automatic SpO2 readings overnight which is a feature I would like. The battery life of the ring is incredible! I charged it once and have worn it for 3 nights and the battery is still above 80%. It also looks sleek and fits well for me. Overall, I'm very happy with this purchase!
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Reviewed in the United States on May 5, 2025 by Raquel Franklin
So I bought this as an alternative to my Garmin. I usually wear the garmin but sometimes I do admit, I prepare to wear my Hamilton Mechanical watch over it just because it looks a lot nicer. But at the same time I still want to track my health stuff. This smart ring does get the job done. It helps track my sleep which is honestly the main thing that I want to track. Since I started working, sleep has been my priority so I’ve been trying to make sure I get enough and monitor where there is anything wrong with the quality of my sleep. No, this is not going to be a Oura but it is not Ours price either since I only paid $55 for it during a prime member sale. The quality feels pretty good and seems to be a bit scratch proof and most of the time, I don’t even feel it there. I think this is a pretty solid choice for someone looking to step their foot into this space. I do wish they could track heart rate more often but it’s not that big of a deal either. Over all pretty good for the price I paid!
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Reviewed in the United States on May 2, 2025 by Justin Zheng
Please don’t waste your money. Nothing on this is accurate. During sleep I woke up 4 times to the restroom. I woke up and stayed awake numerous hours and this showed I never was awake. It’s not 24/7 which I wanted. Just a piece of junk from China.
Reviewed in the United States on May 15, 2025 by kristie moore
I have been wanting something to track my sleep patterns forever. I just couldn't sleep with something bulky on my wrist. I decided to give this ring a try and I have not taken it off except to charge. It comes with this handy little case thats also a charger so you can charge on the go. Battery lasts for days as long as you don't have constant monitoring on. And the best part? I can finally comfortably track my sleep cycles. It's so interesting to see how stress or staying up too late affects it. There's an exercise section that will track your workout and monitor your heart rate. I have not tried to use it for other things like picture taking or page turning or phone controls. But they're options which is neat. Overall. Happy with my ring. Oh, there's no subscription with is perfect.
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Reviewed in the United States on May 15, 2025 by Alkoby Family
This is so much better than wearing a watch all the time. I wear this primarily on my ring finger and still get good readings from it. Must download an app that’s easy to I steal and connect via Bluetooth. Love that this is waterproof and can wear it al day long and while swimming. Keeps its charge fairly well and love the portability of charging. It has cords you can plug into a wall or this portable charger you can charge on the go small enough to fit into any purse or pocket. Very functional for tracking sleep which was main reason for buying. Overall definitely would recommend
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Reviewed in the United States on May 14, 2025 by Tiffani Tiffani
I got this because it reads it can be used for swimming. Sadly, it needs to stay in proximity to the phone in order to track. That's not really possible because, swimming. Also the sleep tracker is woefully inaccurate. I do like the other features but I got it mainly for hr monitoring during swimming.
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Reviewed in the United States on May 21, 2025 by fitguymike
This ring was easy to set up and is exactly what I was looking for! So many rings with so many functions but all I wanted was simply 4 things, pulse ox, HR, blood pressure and sleep. If you are looking for simply these 4 things this is the ring for you! Is it exactly correct, maybe not medical grade but absolutely something to help trend the important things. This is piece of mind, easily install and looks nice. Charged fast and so far battery seems to be lasting a good long time.
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Reviewed in the United States on May 17, 2025 by Cecilia Rodriguez Cecilia Rodriguez
Not great. I don't have a lot of fitness tracker devices or a smart watch because I don't like watches. I decided to get something cheap and this was the winner. Pros- it seems to track my heart rate accurately, compared to my BP cuff. The Ap that comes with it is easy to use and download. I was excited to see it had a Blood pressure option. I don't have blood pressure issues, but I've been getting dizzy in my exercise classes and thought it would be nice to track that. Cons The things it tracks aren't automatic. You have to go into the ap and tell it to measure. The pulse seems to be right, but the blood pressure is waaaay off. Example, I measured my BP with my cuff and it was 106/70 (my normal) and the ring said it was 170/67. I guess I'm going to have to keep looking.
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Reviewed in the United States on May 26, 2025 by John and Beth