KALINCO Smart Watch, Fitness Tracker with Heart Rate Monitor, Blood Pressure, Blood Oxygen Tracking, 1.4 Inch Touch Screen Smartwatch Fitness Watch for Women Men Compatible with iOS Android

Today, 1/4/2024, I believe I finally discovered why my sleep function would come and go overthe past year. Since my last update, nearly 6 months ago, I have had a couple of additional "No Data" experiences, when trying to determine how well I slept the previous night. I tried everything, even moved the watch to my other wrist and still the problem. I did clear the cache memory again for this app on my phone and was about to hit the reset button which would have erased all my exercise and sleep history, when it occurred to me.It was a simple problem which had nothing to do with the app or the watch itself. About 5 months ago the wrist band strap, which prevents the wrist band itself from flapping at the end, had broken. I replaced it with an older wrist band strap, from another watch, which stopped the flapping, but it was still loose up and down the band. I compensated by tightening the watch band 1 or 2 notch holes. This prevented the flapping but it apparently was too tight for the sensor to monitor my circulation sleep data at night. When I returned to the original notch hole position, sure enough.....sleep data this morning. Pretty sure this was the problem. I will use a tighter watch band strap. So I am changing my review to 5 stars today.......excellent value and information for a $30 starter smart watch. Just don't squeeze it too tight around your wrist.********************************************************************************Today, 6/18, the Sleep Function data from last night showed up this morning. I am not sure why. This is the first Sleep Data that got to my HerobandIII app since 5/14/23.The only thing I did last night was charge the watch up to a full 100%. I will now give it a 4* rating.********************************************************************I never thought I would need or want a smart watch. However, as I got older, I wanted something to keep track of my health functions, especially sleep, HR, BP, and exercise data, walking 3-5 times per week. So I found this $30 Kalinko, and figured why not give it a try. I knew it wouldn't be as accurate against standard monitors or other smart watches ,but at least is was mobile. So my expectations were very low to begin with. If it was junk, so be it, and I would spend a little more to get a watch that would give me a higher level of performanceI now have read many of the other reviews, especially the 1 or 2 stars to find out what others have been upset about compared to the one and only problem I have had so far.First, some facts I learned along the way and data to do a level set:1. I purchased my Kalinko P22 in late December, 20222. The basic HR, BP, and O2 measurements are not accurate (10-20% lower) because the accelerometerthe Chinese manufacturer uses is very basic in order to improve their profit margin for inexpensive retail price you pay.However, THIS IS NOT IMPORTANT, believe it or not. What is important are the measurement changes you see in the history log.The differences will give you a trend line against previous measurements. Don'tcompare it to other more accurate devices like BP monitors and cuffs or other instruments at thedoctor's office. Even those only give you single data points, and no trend lines good or bad.3. I believe the Steps function is not a measurement of your walking or physical steps with your feet. Thinkof it as an "Activity" monitor. It measures movement of your right or left wrist, even at night ,when you toss and turn in your sleep or get up to do normal functions that wake you up. I setdaily goal steps to 10,000 steps, which is just about right for my age and activity level.4. Don't expect and help from this Chinese manufacturer. No phone or email and expect poor englishif you do get a hold of someone. Most Chinese products have little help available as I found outwith their remote cameras and other products. The best you can do is download their UserGuide which is still substandard but better than nothing. Also, the included setup guide is so small (fontsize 1 or 2) you can't read it.. I had to copy it to my printer and increase the copy size by 50%.5. Don't buy this watch for yourself or someone that is not good with IT. If you want the full functionbluetooth hookup with the HerobandIII App on your smart phone, you must have a smart phoneand understand QR codes to perform the link. Otherwise you will just get the watch functions withno exercise or sleep data history which is kept on the phone6. Keep this watch on most of the time unless you are taking a shower, swimming, or in water. If youhave a regular watch, keep the Kalinko, on your other wrist, hopefully on the hand you use themost. You will get use to it. The rubber band is basic. Still have my original but you can getfancier ones if you want.7. The battery is good and lasts me normally around 7 days before I charge it up at 20%. The magneticcontacts are a little weird and it's easy to lose contact with the watch. Look for the dashedgreen lights that indicate "charging" and finally "charging complete" and 100% Don't move thewatch while charging. Normally takes about 2-3 hours for me with the USB plugged into one ofmy computer ports.8. The night light Torch function. An unexpected surprise at night or dark places is the singlewatch button turns on a very bright face light to find things and places without a flashlight orlight switch. It gives you about 5 seconds to locate anything within 5 feet.9. Don't care about other functions like weather or remote control for camera shots or messages or music.The Find Phone option might be helpful if you misplace it nearby. ItSo, why just 3 stars?1. It's a beginner smart watch for $30. It's ok, and I might just keep it until I find a moreaccurate or reliable one for $200 or more.2. I am an avid walker and hiker. The Exercise function has never failed me for this type ofexercise. I can go back to December 2022 history on the watch and get informationas to how much I have progressed on the same walks and hikes showing, HR, miles,and how they rate for my age on standard, weight loss, aerobic, and anaerobic functions.This gets a 5 * rating and worth the $30 all by itself.3. The Sleep Function is the most important function for me. It is the only function whichyou don not have to manually start and stop with the watch. It depends on the quality andaccuracy of the accelerometer on you wrist. It worked perfectly for 137 nights from Decemberuntil mid-May. It gave me good info on total sleep time, deep sleep, and times I woke upduring the night. Even a sleep quality score. Then nothing with a "No Data" message whenI woke up on the 138th morning. The User Guide says it is possible that individual sleepapps can lose data if you don't clear the cache memory on the HerobandIII app on the smartwatch. This had to be it, I thought. So I cleared the cache of the 7.8 mb, which should havecleared the problem. However, it didn't and I still have all the sleep history on a calendar goingback to December, but No Data for the past 2 weeks. The only other option would be to clear thedata or reset the watch which defeats the history I want to keep. Not sure what else I can do, and no responsefrom their "helpdesk" email address, or even their app developer. So a 1* for me on this watch on thisaspect.Final Summary.Unless the Sleep Function "No Data" can be restored, no more Kalinko $30 specials for me. I willonly use this watch for Exercise History, Health Trend, and the torch function for seeing in darkareas at night. If anyone else has solved the Sleep Function "No Data" problem. Please document.Thanks.

Gret watch for the price . Sound quality was great . Compatible great weight and heart good . Easy to use brightness well made .

Note to self: App is "Hero Band III" in Play StoreHas a decent amount of functionality. Obviously not a high end device but for the price its hard to speak badly about anything. I like the ability to use a custom photo for the background. UI is pretty intuitive, you swipe in 4 directions to access different functions, and can keep swiping the same direction to switch between Sleep/Steps/Exercise for left/right, swipe down for settings and up for the app selection menu. UI looks nice as well. I don't exercise and disconnect from phone for the most part so after on and off use (I lose it then find it then repeat) so battery lasts 2-3 days for my usage. Watch band could be a little better though.

I bought this watch in late May and it is absolutely unusable as of late August. I'm extremely disappointed in the durability of the watch, as it is defined as a "sport watch". It will not withstand even normal activities. I initially purchased it to track my vitals and use as a step counter for motivation. I'm working on weight loss and also tracking stress and sleep patterns.The watch band has completely fallen apart, though I've used duct tape until I can get a more durable replacement so I can use it to track steps at least for now. The screen has lines running through it, which don't show up in the pictures. The negatives far outweigh the positives, unfortunately. I had hopes this watch would stay with me on my journey, but that is not going to happen.The watch has a decent app, however the bluetooth often becomes disconnected, happening more frequently with use. So the tracking part has no value if the data doesn't save. There is no notification when this happens, so as much as a week and a half has gone by with complete data loss. As a result, my tracking data wasn't saved making the app worthless.The battery life has been decent. But, you must cut back on features in order for this to work. For instance, my watch is set to timeout at 5 seconds. And I've disabled the "look and display" feature. I also don't frequently check it either. The Bluetooth will disconnect with no notification, regardless of battery settings.The durability is another issue where it falls far below expectations. The watch band caused severe itching. The watch band kept detaching from the watch, but I was able to reattach it at first. Now, it tore completely on one side, partly on the other, so I used duct tape to hold it together until I can replace it with a better watch. The loops and band melt and distort during Midwestern summers, then fall off. I lost the loops, then the band tore off.The accuracy of the data is okay. I see my doctor monthly and it it's been sufficiently correct enough in terms of blood pressure, heart rate, and oxygen levels. It usually reads slightly higher with blood pressure. The sleep tracking is inaccurate, but that feature was something I was willing to sacrifice due to the price. Overall, the features have maybe an 75% accuracy.Now the app does work when connected and has features such as colorful watch faces, that track various aspects, depending on which one you choose, when the screen isn't broken. The media player is very simple, only allowing you to pause, go forward, or back. The app is okay if you're good with that kind of thing. However, that all goes out the window when the screen develops lines and other distortions, which mine has. There are now several lines going across the screen, that slowly crept down, and now cover the entire watch face making it mostly unreadable.It was okay while it lasted, but the number of issues I've had don't match the value. The watch band detaching and eventually tearing, the loops warping then getting lost, the Bluetooth disconnecting constantly, and inaccurate monitoring make this a trial watch at best. The watch has fallen apart in 3 months time for me, despite being extremely careful.