Amazfit Band 5 Smart Watch Olive

For the price, this is a really great little health monitor. Although, it does need to be mentioned, that you do need a phone to use the tracker. A companion app, Zepp, is required for the device to do much of anything. So, really, this review is more over the app than the device.The watch natively tracks heart rate, blood oxygen levels, and "steps"- and from this data the phone app will calculate things like calories burned, stress level, sleep quality, and personal activity intelligence.How accurate are they? Well, it varies. The heart rate is fairly accurate, although by default it only updates every minute. You can go into the options, on your phone app, and change this either directly or through an option that automatically ups that rate during exercise. ... MoreFor the price, this is a really great little health monitor. Although, it does need to be mentioned, that you do need a phone to use the tracker. A companion app, Zepp, is required for the device to do much of anything. So, really, this review is more over the app than the device.The watch natively tracks heart rate, blood oxygen levels, and "steps"- and from this data the phone app will calculate things like calories burned, stress level, sleep quality, and personal activity intelligence.How accurate are they? Well, it varies. The heart rate is fairly accurate, although by default it only updates every minute. You can go into the options, on your phone app, and change this either directly or through an option that automatically ups that rate during exercise. Blood oxygen level is a bit finicky. It's a stat that you manually have to check and, in my experience, seems to be consistently a few points off. The pedometer aspect is just way off. Over the course of a day, it tracked me at around 6000 steps- and there was no way that was even possible. Because the device is on your wrist, it can easily give you false steps from simple movements. But, that's how most arm based pedometers are, so I don't really fault this device for it.The calculated stats are going to rely heavily on the algorithm that they use as well as the data that they receive, so are really there as more of a novelty than anything else. The sleep tracker, for instance, is just guessing at when you're actually asleep or in REM. From my experience, it's at least correct about when I'm asleep, although I can't verify if the state of the sleep is accurate. Stress level is based on heart rate variability, and if the device is only checking your heart rate every minute it can be a little off. And calories burned is based on how many steps you've taken, which I've already pointed out can be wildly off.There are a lot more things that can be "tracked" in the app, like weight, height, BMI, water intake, but they don't work. Some won't even allow you to manually enter data, so they're just there to let you know that maybe eventually they might sell a device to track them.The device is comfortable enough to wear. I haven't had any issues with it. During exercise it can jostle a bit leading to more inaccurate readings, and they do mention to tighten to up a bit when exercising. It's not that big of a deal though.Overall, this is great for the price. If you don't want to spend $50+ on fancy "smart" watches and just want a simple device to monitor heart rate- this is for you.

Maybe it deserves more than 1 star but to me it was a disappointment because I only got it for a HR monitor. If you read the reviews and see some of the photos (display with current time and HR), you'd think that you can get a continuous read and keep an eye on it while you're running. Actually, the shortest interval at which it will check is 1 minute, and there is no option to make the screen never time out. The longest screen hold before timing out is 10 secons. You can set an option to make it sensitive to lifting your wrist, which kinda works, but otherwise you have to tap it to wake it up and then look at what your HR was last time it took your pulse, 1 min+ ago.

Cost: reasonable price. I've seen similar watches (different brands) for a much lower price, but not sure if those are reliable.Navigation: fairly easy to navigate through the features, still need to review the manual.Accuracy: reasonable accuracy of heart rate monitoring, but sometimes I think it reports it incorrectly, not sure about the accuracy of sleep or SpO2Battery charge life: per product specs it is up to15 days, which may be possible if you never use this watch for anything. With brightness set 2 notches below max, with a min display auto-off, with using it to monitor your workout, with enabled notifications and SMS, you shouldn't expect more than 5-7 days at the most.Battery charge duration: fairly quick, around 1hr to recharge almost drained (5%) ... MoreCost: reasonable price. I've seen similar watches (different brands) for a much lower price, but not sure if those are reliable.Navigation: fairly easy to navigate through the features, still need to review the manual.Accuracy: reasonable accuracy of heart rate monitoring, but sometimes I think it reports it incorrectly, not sure about the accuracy of sleep or SpO2Battery charge life: per product specs it is up to15 days, which may be possible if you never use this watch for anything. With brightness set 2 notches below max, with a min display auto-off, with using it to monitor your workout, with enabled notifications and SMS, you shouldn't expect more than 5-7 days at the most.Battery charge duration: fairly quick, around 1hr to recharge almost drained (5%) batteryZEPP App (which you must use for the initial setup of the band, coupling with your phone, for your workout, etc.):- reasonably designed, but some of the settings or info is not self explanatory and not easy to navigate to- inconsistency between the workout types shown on the band vs. in the App. For example I configured 5 workout types which I see on the band, but only 3 of them are shown in my list in the App. This is a limitation of the current version of ZEPP.You should consider the band as an extension to your smart phone. Even though its many features don't require the use of the phone, many settings can be enabled/modified only through the ZEPP app.- frequent lost connection between the band and the app, to reconnect, I have to restart my phone almost every dayBand Display:- brightness: good indoor, but outdoor in the sunlight, I could only see it at 1 or 2 notches below max, ideally I would use max, but then it will drain the battery much quicker- font size: besides the time, other indicators are very small and their colors also make it more difficult to see. I have prescription glasses, but normally don't need to wear them unless I need to read a very small font. I have to wear my glasses to see all items on the band display.Device Locator: Very useful for locating your phone, it will ring, so you find it if it is within the blue tooth distance. Not useful for location the band because it only vibrates. So if you misplaced it, how would you know that it vibrates?Overall: My main goal was to get a low cost but accurate heart rate monitor to be used during a workout. I think Band 5 is OK for this. Other functions are nice and useful. Considering the price, I would recommend it for those who are not too much into fancy gadgets.