Related: How to Test Your Watch's GPS Accuracy on a Course You Already Know
I have worn a watch on every run since 2019, which adds up to more than 8,000 logged miles, and I keep a spreadsheet of which watches lie about their metrics. So when somebody asks me for a budget smartwatch comparison, I do not start with the spec sheet. I start with three questions: does the GPS match a course whose distance I already know, does the heart rate track a chest strap through intervals, and does the battery survive a week of real use instead of a week on a nightstand?
The four watches here are all affordable, and they are not built for the same person. One has real GPS and sapphire glass. One has a 1400mAh battery and an LED flashlight. One makes Bluetooth calls from your wrist. One is the cheapest way to get a continuous heart rate graph on your arm. None of them is a Garmin Forerunner, and I am not going to pretend otherwise. But if your budget tops out where a flagship's sales tax starts, there is a watch on this list that will track your actual sport accurately.
What actually matters in a budget watch
GPS accuracy is the whole game for runners. A watch that is off by 100 meters on a 10K is a watch that is lying to you, and once you know it lies about distance, you stop trusting the pace, the splits, and every training load number built on top of them. If you run or ride outdoors, GPS is the feature that decides whether the watch is useful or decorative.
Wrist heart rate is the second test. An optical sensor has to read blood moving through tissue while your arm swings, so it lags a chest strap, especially at the start of hard efforts. You are not looking for perfection. You are looking for the absence of nonsense, meaning no random spikes to 190 while you are jogging easy, and no flat line at 120 while you are gasping through the last rep of an interval set.
Battery life is the third test, and the spec sheet is the worst place to learn the truth. Every watch is rated at light use, which usually means notifications off, screen dim, and no GPS. Test it at real use and you will get a number that is honest.
Software is the watch. A great sensor with buggy software is a great sensor you cannot trust, and a firmware update that breaks a feature you relied on is worse than a feature that never existed.
Best Overall: Amazfit Active 2 Premium
This is the only watch in this comparison with built-in GPS, and that single fact settles the question for anyone who runs, rides, or hikes outside. Pair it once and leave the phone at home. The display is 1.32 inches under sapphire glass, and sapphire is the spec I care about most after GPS, because it is the difference between a watch you wear for three years and a watch with a scar across the middle in month two. It works with both iOS and Android, so it does not lock you into a phone brand.
What I would verify before trusting it: the GPS trace on a course whose distance you already know, and the heart rate against a chest strap through intervals. Those are the two numbers the whole training picture rests on.
The tradeoff is the screen. At 1.32 inches it is small, and if reading full notifications from your wrist matters more to you than accurate distance, this is not that watch. If accurate distance matters more, this is the one.
Best Battery Life: LIGE Military Smart Watch
A 1400mAh cell is a big battery for a watch, and the listing claims 60 days on a charge. Understand how that number gets produced: no GPS, notifications off, screen rarely lit. On real use, with notifications coming in and a workout or two a day, you will land well short of 60 days. That is not a knock on the watch. It is just how every battery claim in this category works, and a 1400mAh cell still has far more headroom than the small batteries in most watches near this price.
The 1.85 inch HD display is the opposite of the Amazfit's small screen, so notifications and watch faces are easy to read. You get 100+ sport modes, an IP68 rating, a pedometer, and an LED flashlight built into the case. I like the flashlight more than I expected to. It is the feature you use before sunrise when you are lacing up in a dark hallway, or when you drop your keys in the grass after a run. IP68 handles rain, sweat, and hand washing, though it is not a dive rating.
The catch: there is no GPS here. For the gym, the treadmill, and daily walking, that is fine. For outdoor distance and pace, it is not the watch you want.
Best for Calls: Smart Watch for Women Men, 1.85 inch HD Fitness Watch
This one leads with Bluetooth calling, which means there is a microphone and a speaker in the case. That is the feature to test on day one, with a call to somebody who will tell you honestly how you sound. Calling from your wrist is convenient in a way that is hard to explain until you have done it while carrying groceries.
Beyond that you get a 1.85 inch HD display, 120 sport modes, custom dials, and heart rate and sleep monitoring, on both iPhone and Android. The big screen and the dial customization are the reasons to pick this over the others if you care about how the watch looks on your wrist.
Two honest notes. A list of 120 sport modes is not a measure of accuracy, and a long list often just means more categories to scroll past. And sleep tracking on any wrist device is an estimate built from movement and heart rate, not a sleep lab result. Useful for spotting a trend, not for diagnosing anything.
Best Budget Pick: MorePro Fitness Tracker Watch
This is the least expensive way on this list to get continuous heart rate and blood pressure monitoring on your wrist, and I want to be straight with you about half of that sentence. Wrist based blood pressure from an optical sensor is not a medical measurement, and no wrist watch should be used to make a health decision. Treat it as a rough trend line at best, and a noisy one. If blood pressure numbers matter to you, that is a cuff conversation with a doctor, not a watch.
What a tracker at this price does well is the boring, daily stuff: steps, a sleep estimate, and 24/7 heart rate, with a small screen that means you charge it less often. That is a genuinely useful device for somebody who wants to see their activity and resting heart rate without spending real money. Just do not buy it expecting chest strap accuracy through intervals.
The comparison table
| Watch | GPS | Battery claim | Display | Best for |
|---|---|---|---|---|
 Visit on Amazon →Amazfit Active 2 Premium |
Built in | Not listed | 1.32 inch sapphire glass | Outdoor distance and pace without a phone |
 Visit on Amazon →LIGE Military Smart Watch |
No | 60 days, light use | 1.85 inch HD | Going a long time between charges, plus a flashlight |
 Visit on Amazon →Smart Watch for Women Men, 1.85 inch HD Fitness Watch |
No | Not listed | 1.85 inch HD | Bluetooth calls, custom dials, a big screen |
 Visit on Amazon →MorePro Fitness Tracker Watch |
No | Not listed | Not listed | The lowest cost way to watch steps and resting heart rate |
How I would test any watch on this list
The protocol is the same for a $40 tracker and an $800 flagship, because accuracy does not care what you paid.
GPS. Run a course whose distance you already know three separate times, then lay the traces on top of each other. Look for corner cutting on tight turns and a straight line drawn through switchbacks. A watch that cuts corners on trails will also cut corners on your tempo runs, and your paces will look faster than they are.
Heart rate. Wear a chest strap and the watch at the same time for a set of six 400 meter repeats. Compare the lag at the start of each rep and watch for random spikes. Wrist HR that is five seconds late is normal. Wrist HR that reads 190 while you jog easy is broken.
Battery. Charge to full, then live normally for seven days: notifications on, a few outdoor sessions, screen at your normal brightness. Note the percentage on day seven. That number is the real rating, not the one on the box.
Software. Check how often the companion app and the watch firmware get updated. A company that ships fixes is a company whose sensors you can eventually trust. A watch that never updates is a watch frozen at its launch bugs.
The number on the box versus the number on your wrist
Every battery claim in this category, including the 60 day claim here, is generated at light use. That means notifications off, screen dim, and sensors quiet. It is not a lie exactly. It is a best case, and a best case is not a plan. Run the seven day test above and you will know in a week what no spec sheet will tell you.
Should you buy the Amazfit Active 2 Premium?
Yes, if you run, ride, or hike outside. It is the only watch here with GPS, the sapphire glass is the right material for something that lives on a wrist, and it works with whichever phone you already own. Verify the GPS trace and the heart rate yourself before you build a training plan on it, the same as you would with any watch.
It is not the pick for you if you want a big screen for reading messages, or if you never leave the gym floor and do not need distance at all.
Should you buy the LIGE Military Smart Watch?
Yes, if the thing you hate most about smartwatches is charging them. The 1400mAh cell is the biggest battery here by a wide margin, the 1.85 inch screen is easy to read, and the flashlight earns its place on early mornings. Just translate the 60 day claim into real use before you plan a trip around it, and remember there is no GPS, so outdoor distance is off the table.
The short version for the other two
If Bluetooth calling and a big, customizable screen are what you want, the 1.85 inch fitness watch is the one, and test the call quality on day one. If you want the cheapest possible way to see your steps, sleep, and resting heart rate, the MorePro tracker does that job, as long as you treat the blood pressure feature as a novelty and not a measurement.
No watch at this price will match a chest strap through intervals or a flagship's GPS on a technical trail. But one of them will track your actual sport accurately, and that is the only test that matters.