RENPHO Lynx Smart Ring-All Day Sleep & Activity Tracking, Includes Charging Case, Gifts for Men, 7-Day Battery Life, Subscription-Free App for iOS & Android, Size Before You Buy (Silver, Size 8)

Exactly What I Wanted!
Thanks to the Google/Fitbit merger, I have been in the market for a new device to track my sleep, steps and other aspects of health as I recover from a chronic illness. Since I don’t like wearing wristbands (especially during sleep), I set my sights on a Smart Ring, and the RENPHO Lynx Smart Ring was the 16th I’ve tried… Sweet 16!After trying multiple generations of Oura, RingConn, Samsung and other “generic” devices, I decided to try one more time. This is when I found RENPHO.I didn’t bother with the sizing kit because these rings all follow the same sizing format, and I knew that I could stick with the size 10. Fits perfectly, even when I suffer with swelling, I can just switch to a different hand or a thumb.Even though I do not agree with sleep metrics that claim to detect and differentiate between “Light” or “REM” sleep, there’s no getting away from them… They are on every device. What I want is an accurate record of “Awake”, “Restless” and “Sleep” time segments from my sleep cycle.(Like I had with Fitbit for 10 years…RIP), but I’m trying to deal with this new metric.RENPHO is the ONLY device that comes close (minus the bogus “Light” sleep) to accurately mapping my sleep cycle.This ring is exactly what I was looking for and I am very happy with the PRO’s:*Reasonable price – $170*No Subscription Fee*Light weight and stylish (I got the silver band)*Easy to setup and it stays connected (unlike some of the others I’ve tried this year.)*Accuracy with sleep and my few steps… Finally!*HRV, Heart Rate and PulseOx are accurate as well.The only CON (that doesn’t affect me) but may be an issue for other users:*Curved profile of the ring makes it slightly thicker than other rings, and might be uncomfortable while handling weights or bars during a gym workout.I would definitely recommend RENPHO and I will update with any changes or updates.

Issues with syncing and counting steps
I paid for a new device, but suspect I might have been given a “refurbished” or defective unit. Instructions say it required a 1.5 hour charge before set up, but both the ring and case were fully charged 100% out of the box. Anyway, the device constantly disconnects and at least once per 24 hours I have to put the ring in the case just to get it to sync/update stats. So basically when this happens, I can’t take active readings or see recent stats if I don’t have the case readily available. The ring looks great and is comfortable. The step-counting feature is wildlyinaccurate. Every morning I wake up with 200-400 steps taken while sleeping. I sat on the couch for 2 hrs yesterday, completely motionless, and somehow logged almost 3,000 steps in that time. I mostly got this to check my heart rate through the day and track my sleep. Both features work well as long as the device decides to connect. Im on day 5 of wearing my ring and it did not track my sleep at all last night even though i never took the ring off. I like this ring but I think I’ll be asking for a replacement, so i can give the product a second chance.

Didn’t fit
Should have gotten a bigger size as it was a little tight on my finger and extremely uncomfortable. I did try it a few times, I loved how well it tracked my sleep and my overall health. Will definitely be looking into buying another one just in a little bigger size

Great alternative to Oura and Samsung Ring
Excellent build quality, battery lasts a long time and connectivity with the app are excellent