Amazfit Helio Smart Ring, No Subscription, Monitor Sleep, Heart Rate, Stress, Fast 1.4 Hour Charging, iPhone and Android, Titanium Alloy, Swim/Shower Water-Resistance (Size 8)

Very accurate and perfectly fits in my finger ( size measured according to amazfit website)

i love rings and also application. so bad there are no more support, it’s not possible add more activities to be monitored on the app. materials are amazing. even i train daily crossfit material resist scratch, pictures are for 1.5 years daily used ring.

Did not fit. The measurement system for this product is MESSED UP. The measurements they give are for the OUTER DIAMETER of the ring, which is stupid beyond belief. So what you have to do is measure the DIAMETER of the finger you intend to wear it on several times throughout the course of a day. Average these out. Add 3.2mm to this average number. Then if this total is within a millimeter of one of their measurements, order that one. It still might not fit but at least you won't have been misguided into buying the smallest one when you really need the biggest.

This is an amazing smart ring though it does have a few minor downfalls. The sensors are extremely accurate and it collects a ton of data. At first I thought the "emotion detector" was going to be a nonsensical filler, but after being in a few stressful situations I received a notification asking if I was stressed during a certain time period. Each time it provided accurate feedback and then logged that information for later review. My personal favorite feature is the sleep sensor. As someone with sleep challenges at times it is really great to see how well I'm sleeping and what I can do to fix it. The heart rate, step counter and oxygen level monitors are phenomenal as well. Though one of the few downfalls of this ring is that if you want to track a workout you have to enable it through the Zepp app compared to similar smart rings that sense it automatically. It's not a deal breaker by any means but it can be a little annoying if you forget. The only other "complaint" I have is that the battery doesn't last as long as advertised if you have all the functions enabled. With everything enabled the battery lasts about 2 1/2 days, not bad but could be better. Not all the functions are necessary so if you don't enable the stress/emotion sensors and set the heartrate monitor to scan every 30 minutes instead of every 10 minutes I'm sure the battery will last longer. Now the main thing that convinced me to buy this ring instead of any other brands I was looking into was the fact that THERE IS NO SUBSCRIPTION!!! Normally Amazfit charges a subscription fee in the Zepp app for their other devices in order to access Zepp Aura Premium and Zepp Coach Premium. This ring gives you access to both services FOR FREE FOR LIFE!!! Zepp aura is a relaxation meditation service and Zepp Coach is an AI powered "personal trainer" of sort. I personally wouldn't pay for it if it wasn't included with the ring, but they're great add-ons. Overall for $170 this is an AMAZING smart ring if you don't want to fork over $400 plus a subscription every month for the competitors. As long as you're okay with a fairly average battery life and having to enable work out tracking yourself I think this is a pretty good option.

I recently purchased an Amazfit Helio Ring on 25 may of Size 8, as a gift for a family member/friend. However, after trying the ring, I received feedback that the size is too small and cannot be used. And is completely unused as company is not ready to change the size