Free shipping over $35 · 60-day returns · Price-watch guarantee

Ventari

femometer

femometer Smart Ring Gen2 Ceramic Sleep Heart Rate Cycle Monitoring with Free Subscription Womens Health Fertility Tracker with

$219.00

106+ bought in the past month

Sobre este artículo

  • 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.
  • 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 100m, 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.

Key details

Operating System
Wear OS 3.0
Special Feature
Activity Tracker
Wireless Communication Standard
Bluetooth
GPS
No GPS
Shape
Round

Dimensions and fit

dimensions
3.31 x 3.23 x 2.52 inches
weight
4 Grams
Screen Size
1.0
package_dimensions
3.31 x 3.23 x 2.52 inches
item_weight
4 Grams
standing_screen_display_size
1.0

Technical specifications

item_model_number
Gen2

Item information

Brand
femometer
batteries
2 C batteries required. (included)
best_sellers_rank
#7,938 in Electronics ( See Top 100 in Electronics ) #31 in Smart Rings
date_first_available
September 27, 2024
manufacturer
LOLLIPOP TECHNOLOGY (HANGZHOU) CO., LTD
Highlights

About this item

  • 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.
  • 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 100m, 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.
Close-up view of the femometer Smart Ring Gen2 Ceramic Sleep Heart Rate Cycle Monitoring with Free Subscription Womens Health Fertility Tracker with
Details

Construction and technical details

Battery Capacity
21 Milliamp Hours
Connectivity Technology
Bluetooth
Battery Cell Composition
Lithium Ion

De la marca

Product detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detailProduct detail

Product videos

Product video 1

Customer reviews

182 reviewsPositive

Rated 4.0/5 across 182 reviews — well received overall.

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

Customers say

Customers find the smart ring excellent for health tracking, particularly for sleep and TTC purposes, and appreciate its sleek appearance and straightforward app interface.

Generated from the text of customer reviews

Reviews with images

Customer review image for Great health tracking/ fertility trackingCustomer review image for Great health ring with amazing tracking features!Customer review image for Great health ring with amazing tracking features!Customer review image for Great health ring with amazing tracking features!Customer review image for Too expensive for little info and not waterproofCustomer review image for Good potential but NOT WATERPROOF!Customer review image for Good potential but NOT WATERPROOF!
See all photos
★★★★★

amazing product!!

loooove this product so much! my femometer has changed the game for me when it comes to tracking my cycle and other health data. it is very easy to use and is so accurate! typically, for biometric rings it is advised to wait at least 60 days after purchase for accurate female data, however, my femometer has been accurate since the very start! that impressed me right off the bat. it holds a charge for up to 4-5 days and then when you put it in the charging case it charges fully within a couple hours! i love how slim the ring is. it is very comfortable and most of the time i barely even notice that i’m wearing it. i love that there is no app subscription. i would 100% recommend this to any woman who wants to track their cycles or even just their sleep/health data. Read more

Joseph
★★★★★

Great health tracking/ fertility tracking

Great product created by great people. Truly no subscription health tracking. Femometer is quick to discover faults and send out updates to resolve them without you needing to buy a new ring. I had the pleasure of being able to talk with them about my ideas and changes I would like to see as a customer and they were super receptive and encouraged me continue reaching out with any questions I might have. Very comfortable to wear and over all great product for a great price! Read more

Customer review image for Great health tracking/ fertility tracking
Ashley Noyes
★★★★

Should I be worried?

So far I absolutely do love the ring! I wear it on my middle finger and grounded the sizing was a little weird overly I'm satisfied with it. But yesterday, the skin of it I guess you can call it begin to peel off I had to use super glue what a dry a little and then put it back in place. Overall though everything is still working fine the charge life is all that great but yeah!. Sleep tracking is very insightful and I would say that it's the connectivity it can be slow at times but it works. Overall I want to say it's pretty accurate though I'm worried about the durability. Read more

C.M
★★★★★

Love My Ring!

Love my ring. Been using this every night except when it needs charging. Battery needs charging when it's under 20% otherwise it may not track your performance or sleep properly. Read more

Love the shoes. Really comfy to wear.
☆☆☆☆

Cheap quality not worth the price tag

If I could give a zero I would. I had this ring for a month literally and the outside ring cracked, I don’t do any heavy lifting or anything with it on. Then I went to take it off and the whole outer portion just came off leaving the inner portion of the ring still on my finger. It also doesn’t do anything unless you constantly sync it. So in order for it to even register your bbt you have to go into the app everyday every morning and the whole point in buying this was so that I wouldn’t have to go into an app and input this stuff. Also the battery is terrible last 3 days at the most. Don’t waste your money it’s not worth it. Just buy and Oura ring… Read more

Destany & Thomas
★★★★★

Great health ring with amazing tracking features!

really love this health ring! It’s super comfortable and tracks so many things. My favorite feature is the body temperature tracking — it’s so much easier than taking my temperature every day manually. I also like that the app lets you track pretty much anything you can think of, from calories and moods to symptoms, sex days, and even cervical mucus. It gives a really complete picture of your health. Another thing that really impressed me was the customer service. They actually reached out to ask for feedback so they could improve the app and product, which made me feel like they genuinely care about their customers. Overall, I’m very happy with this purchase and definitely recommend it! Read more

Customer review image for Great health ring with amazing tracking features!Customer review image for Great health ring with amazing tracking features!Customer review image for Great health ring with amazing tracking features!
Mia
★★☆☆☆

Too expensive for little info and not waterproof

Not great. You can’t wear this swimming or in the shower or even washing dishes. I think that’s crazy considering it’s so expensive. Definitely not worth the money. It doesn’t give a ton of info. I was trying to decide between this and the Whoop band and ended on this because it’s more feminine but after my husband got the Whoop watch I realize that his band gives WAY more info than this and its completely waterproof and can also charge while he’s wearing it. Way better deal! So pretty much this is an okay ring just definitely not close to worth the cost, so I will sadly be returning. I do appreciate how good it looks though! Read more

Customer review image for Too expensive for little info and not waterproof
Caleb
★★★☆☆

Good potential but NOT WATERPROOF!

My first one died after a week or two. It wouldn’t charge or sync, and the ceramic cracked. I requested a replacement. After a brief delay (it was out of stock), the manufacturer sent me a new one. I quickly realized it was not very waterproof- I accidentally forgot to remove it while doing dishes. It had to spend some quality time drying in a bag of rice before it would charge again. The battery is supposed to last a few days. It lasts less than one day, so I can only wear it to bed and remove it during the day, much like a Tempdrop. So the activity tracking doesn’t really matter. The sleep data has trouble syncing with Apple Health. The sleep duration does, but Apple can’t interpret the sleep stage data. See photos. The first one is Apple Health. The second one is the Femometer app. Read more

Customer review image for Good potential but NOT WATERPROOF!Customer review image for Good potential but NOT WATERPROOF!
Dr. Anne
Recently Viewed

We use optional analytics cookies to understand how visitors use Ventari and improve the experience. This banner controls analytics measurement only. See our Cookie Policy.