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femometer

femometer Smart Ring Gen2 - Women's Health & Fertility Tracker with BBT Technology - Sleep, Heart & Cycle Monitoring - Ultra-Thin 2.7mm Design, Free Subscription - Size Before You Buy - Size 8

    • Based on 38 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Apr 10
Order within 1 hour and 19 minutes
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Size: Size8


Features

  • 24/7 HEALTH COMPANION: Continuous heart rate monitoring and HRV tracking provide stress insights and health trends. Track daily activity, steps, and calorie burn. All health data syncs seamlessly with the lifetime free femometer app.
  • PROFESSIONAL SLEEP INSIGHTS: Track sleep stages (Deep, Light, REM), blood oxygen levels while you rest. Get detailed sleep scores and personalized recommendations. Smart alarm feature helps optimize your wake times based on sleep cycles.
  • ADVANCED CYCLE TRACKING: Revolutionary BBT technology with 1,400+ nightly temperature measurements provides accurate cycle predictions and ovulation detection. Part of trusted femometer ecosystem with 15M+ women worldwide.
  • COMFORT MEETS ELEGANCE: Just 2.7mm. Premium ceramic exterior with aluminum core ensures durability while weighing only 3.3g. Scratch-resistant, water-resistant to 1.5m, and designed for 24/7 wear. Size First with femometer Sizing Kit.
  • SIMPLE & RELIABLE: Up to 35-day battery life with quick charging case (stores 5 full charges). Pair with femometer app to get lifetime subscription. Compatible with iOS and Android. Includes 1-year warranty and dedicated customer support. Regular firmware updates ensure continuous improvement.

Operating System: Wear OS 3.0


Special Feature: Cycle Tracking, Activity Tracker


Battery Capacity: 21 Milliamp Hours


Connectivity Technology: Bluetooth


Wireless Communication Standard: Bluetooth


Battery Cell Composition: Lithium Ion


GPS: No GPS


Shape: Round


Screen Size: 1 Inches


Brand: femometer


Package Dimensions: 3.2 x 3.2 x 2.4 inches


Item Weight: 0.131 ounces


Batteries: 2 C batteries required. (included)


OS: Wear OS 3.0


Connectivity technologies: Bluetooth


GPS: No GPS


Special features: Cycle Tracking, Activity Tracker


Other display features: Wireless


Whats in the box: Femometer Smart Ring, Charger Case, USB Cable, Quick Start Guide, Manual


Manufacturer: LOLLIPOP TECHNOLOGY (HANGZHOU) CO., LTD


Country of Origin: China


Date First Available: September 27, 2024


Weight: 3.7 Grams


Standing screen display size: 1 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 10

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.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Gen 2 ring
Size: Size9
For women trying to get pregnant. This ring provides BBT, heart rate and oxygen levels. It's a wonderful product.
Reviewed in the United States on February 17, 2025 by Kimberly Singleton
    • Not for menopause
Size: Size8
My wife is 44 and thinks she may be going through menopause. I got this for her in hopes that it might provide insight into the situation. However, after using this for a few days she tells me its more for younger women looking to get pregnant, and she wish she had this when she was trying to get pregnant with our 3rd child. Still, she's been using it to track all sorts of things but she does wish there was something in the software that catered to menopause. What she liked: The ring is great for tracking all sorts of things. She still uses this for sleep tracking, blood oxygen, steps, calories etc. She says, that the app is more geared towards how everything coalesces with a womans cycle and thats where its more beneficial for a woman looking to get pregnant. With our 3rd child she used some app that she had to manually input a lot of the information that this can gather on its own. This simplifies all of that and provides an easy method for tracking. Fits well. Easy setup, my wife had this connected to her phone and tracking within minutes. What she didnt like: Nothing for older women, honestly though I feel like thats more on the app and maybe with a software update this will be addressed. ... show more
Reviewed in the United States on February 1, 2025 by paul d.
    • Great cycle tracker
Size: Size8
Review Image by Jenni Jenni
Review Image by Jenni Jenni
This would have been amazing when I was trying to get pregnant. I had to track my temps manually by taking my temperature immediately upon waking up and I remember so many mornings sleepily trying to read the numbers on my basal thermometer, and entering them into my fertility tracker. This ring makes it as simple as just remembering to put it on at bedtime. Its very comfortable provided you wear it on a finger that it fits loosely on, at least in my case I ended up having to switch fingers because it got too tight an hour into wearing it. This is helpful for any cycle related issues, in my case PMDD. I can track my moods and swings in my hormone levels, which impacts my mental health throughout the month. Set up was a little tricky, but I think you really have to follow the instructions and let it charge properly before syncing. Otherwise everything works perfectly as long as Bluetooth is turned on. ... show more
Reviewed in the United States on January 16, 2025 by Jenni Jenni
    • Stopped working after 5 days
Size: Size8
Review Image by RV'ing with Birds RV'ing with Birds
Review Image by RV'ing with Birds RV'ing with Birds
I was so excited to start using this. Packaging was very appealing and user friendly to set up. Comes with a charging case that holds 5 charges before you need to plug that in. The ring attaches to the case via magnets to charge. When I first put the ring to charge after opening the packaging, it didn't light up immediately to indicate charging. That was my first clue that there were going to things just not fully figured out about this product. I had to keep fiddling with it to get it to latch on magnetically just the right way to get it to light up to charge--and then the light would turn off if I jostled it. Fast forward, I get the ring to charge fully and put it on. I download the app--that was easy and all the English in it is almost, ALMOST translated correctly. Now I just have to connect the ring via Bluetooth. Well, wouldn't you know that required several minutes of turning my Bluetooth on, turning it off, turning it on again, closing the app, putting ring back on the charger. I finally got it to connect though, and for the next 5 days, the ring measured pulse ox, basal body temp, steps, sleep. The most important one was basal body temp, which by and large seemed accurate. It was so much more convenient than having to wake up at the same time, after the same amount of sleep, and take temps in the dark. The app was pretty user friendly as well. Not only did it chart the temp and the rest of your vital functions, but you can easily log your LH stick readings, CM stats, BD dates, even mood, physical symptoms. It would even read your LH stick for you via your camera! Every morning, all I had to do was sync the ring to app. After that initial difficulty, it seemed to sync just fine now, always on the first try. The battery went down about 15% a day, so when I stopped noticing the telltale lights on the inside of the ring periodically taking my temp, I tried to sync it to check the battery, and it wouldn't sync. I put it to charge for an hour or so, and was able to connect while it was on the charger. But when I took it off, despite the battery now being full, it would no longer connect, nor did it light up to take temps. That morning, lo and behold, it again would not sync and had no basal temp for me. When it's on the charger, it will sync and say it's at 99%, but as soon I put it on, it's radio silence and I don't think it's collecting any data any more. No matter what I do, it's not coming back to life. It stinks because if you're trying to conceive, you really need the information from every day, at least during key weeks, so trusting this thing and losing out on those days of missing data was disappointing. I tried to contact customer service via the app, but it said it wasn't set up with my email and did not prompt me for my email. I emailed [email protected] my own, but received no reply. I'm sure they will replace the ring when I am able to get a hold of them, but the fact is, I trusted this device during days when I really needed the data and I can't get that back. The ring itself was fairly comfortable and attractive looking. I forgot it was on my finger most of them time except for certain fine motor hand movements, then the thickness would hurt a little if my fingers were rubbing together. But you mainly only need to wear it during sleep, so for that, it was mostly comfortable and not even noticeable. I really wish it worked, because I was really enjoying using the app and the app's guidance and interpretation of my data: it was so much better than googling it all, and the automatic basal body temp was so nice compared to the thermometer. ... show more
Reviewed in the United States on January 22, 2025 by RV'ing with Birds RV'ing with Birds
    • Smart Health Tracking, Simplified
Size: Size8
This health-tracking ring packs impressive features in a slim, comfortable design. From sleep monitoring to fertility tracking, it provides valuable insights without the bulk of a smartwatch. The battery lasts for days, and the companion app makes data easy to interpret. A must-have for anyone serious about tracking their wellness. ... show more
Reviewed in the United States on February 9, 2025 by jph55
    • Don’t buy unless you wanna only use it for a month
Size: Size9
It was cool when it worked. I had it for a month and it has stopped syncing. I’m rather annoyed I spent this money to figure this out. I hope their customer service can help get it working or will replace it.
Reviewed in the United States on February 23, 2025 by After about a month it stopped connecting. I hope customer service can help me or replace it, but I’ll be rather annoyed if I spent this money for only one month.

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