Flaws but not dealbreakers: The Apple Watch requires an iPhone—if you have another kind of phone, you’re out of luck. While good Apple Watch apps are better than what you get for Android smartwatches, many are still very limited compared with their phone counterparts. And it can get annoying how aggressively the Apple Watch turns off its screen (to save energy) whenever it senses you’ve put your arm down.
My personal favorite watch for Android on the market today actually isn’t an Android Wear device, rather coming from Samsung and running atop Tizen. The Samsung Gear S3 Frontier is all the smartwatch you’ll ever need, with a sporty, circular gray design with a 1.3-inch Super AMOLED display that is the best I’ve personally ever used and is protected by Corning Gorilla Glass SR+.
I’ve had the Samsung Gear S3 classic for a few months now. There are lots of apps now available including a music app which allows you to save and play as many tracks as the sizeable built in memory will allow you to save to the watch. The in-built speaker is high quality for making and receiving calls and of course listening to music, but a Bluetooth headset makes all the difference.
The Gear S3 also offers a dual-core Exynos 7270 processor, 768MB of RAM, and 4GB of storage. The watch also features sensors such as GPS, NFC, and even optional LTE. The standout features, though, include Samsung Pay (on any smartphone) and the rotating bezel. The Gear S3 is a pretty big watch, though, coming in at 12.9mm thick with a 46mm diameter.
348 x 250 Resolution Touchscreen Display/ Color LCD/ Dynamic Personal Coaching/ PurePulse Heart Rate/ Popular Apps/ SmartTrack/ Sleep Stages And Insights/ Store And Play Music/ Water Resistant Up To 50M And Tracks Swims/ Built-In NFC Chip/ All-Day Activity/ Built-In GPS/ Multi-Day Battery/ Multi-Sport Modes/ Smartphone Notifications/ Blue Gray And Silver Finish
Smartwatches are relatively new gadgets, and their features are continuously improving. Each smartwatch needs to synch to your smartphone to get enhanced features. Once linked, depending on the model of smartwatch, you can forward emails, text messages, GPS directions and more to your wrist. Some smartwatches even have built-in microphones and speakers, allowing you to make phone calls. Calls are routed through your smartphone, just like when using a Bluetooth Headset. The Samsung watch—dubbed the Galaxy Gear—also has an integrated camera, so you can snap spontaneous photos without ever picking up your smartphone. Of course, ever smartwatch also functions as a traditional digital watch when not linked to a smart device. As the technology matures, expect to see more advanced features and perhaps even complete phone functionality built in.
It's also very bulky. Sitting at 46mm wide might not sound like much, but then you have the depth, and there's a lot of it here. In fact, if we had to pick one criticism of the Watch Sport it's that it crams so much in, it does so to its detriment. The size will be too overbearing for many, but the pay-off in size means that most of the great features of the Watch Sport have been discarded.
The operating system you choose depends solely on the type of smartphone you have because the smart watch is paired with your smartphone. If you own an Android smartphone, your smart watch should have Android Wear or Tizen. If you own an iPhone, choose an Apple Watch. For example, the Samsung Gear S3 runs Tizen and is compatible with both the Android and iPhone.
None of the newly tested models’ time displays time out when the watches are inactive, which we’ve seen happen on previously tested smartwatches. The time displays of the LG, Samsung, and Motorola models have a setting to keep them always on, though they dim after a little while. The Martian Notifier and Cookoo2 have traditional analog watch faces.
On-Screen Workouts/ Connected GPS/ Bluetooth/ Smartphone Notifications/ 4 Day Battery Life/ Heart Rate Tracking/ 15 Exercise Modes/ SmartTrack/ All-Day Activity/ Female Health/ Sleep Tracking And Stages/ Cardio Fitness Level/ 3-Axis Accelerometer And Gyroscope/ Optical Heart Rate Monitor/ Color LCD Touchscreen Display/ Water Resistant To 50 Meters/ Grey And Silver Aluminum Finish
To round off the Gear Sport’s positives, it has very solid battery life (almost never less than 50 percent of the battery remaining after a full day), it can play offline Spotify playlists (even for free accounts), and if you have a Samsung phone, it integrates easily with most of the apps you have installed there. The Gear Sport is easier to set up with a non-Samsung Android phone than previous versions of the Gear watch, too. It still requires the installation of at least four apps and some regular updating, but it’s not the hour-long trial-and-error of other Gear watches we’ve tested, working reliably in our testing.
When you do switch to the OLED display, you are in TicWatch Pro’s Smart Mode, and you can perform all of the features and functions that are available in the smartwatch. However, switching to the low-power FTSN LCD display puts the watch in its Essential Mode. The nice thing is that when you switch back to Smart Mode. all of the heart rate and steps info gathered by the watch’s Essential Mode are synced up and transferred to the onboard Wear OS. As you might expect, the battery life in Essential Mode can last up to 30 days, while using the smartwatch in Smart Mode cuts that battery life down to just two days.
Built-in GPS and a great workout coach make the Huawei Watch 2 a great companion on long runs and intense workouts. You can leave your phone behind, too, thanks to onboard music storage and the ability to connect Bluetooth headphones to the watch. Like the LG Watch Sport, the Huawei Watch 2 has an LTE version, but unfortunately, Huawei isn't selling that model in the US yet.
The Passport is versatile in that it works with Android and iOS mobile devices. And it features the ability to make phone calls with its built-in microphone and speaker. You can use voice commands (the Passport leverages your phone's voice recognition system; such as Apple's Siri for iOS devices or Google Now for Android) to control the mobile device from the watch. And because of the analog watch face, you can easily see the time in bright sunlight.
Yes, it can monitor your health and fitness. You should choose one that has a pedometer to count your steps. An accelerometer is helpful in determining acceleration. Acceleration can be used to detect when you fall. A heart rate sensor can be used to monitor your heart beats. Some will report the amount of calories you consume and even display a report of your health at day’s end.
The top smartwatches that debuted at the 2017 Consumer Electronics Show included the Casio WSD-F20, Misfit Wearables Vapor and the Garmin Fenix 5 series. Apple released on September 22, 2017 their Apple Watch Series 3 model which offers built in LTE cellular connectivity allowing phone calls, messaging and data without relying on a nearby smartphone connection. 
While internal hardware varies, most have an electronic visual display, either backlit LCD or OLED or Hologram. Some use transflective or electronic paper, to consume less power. Most have a rechargeable battery. Peripheral devices may include digital cameras, thermometers, accelerometers, pedometers, heart rate monitors, altimeters, barometers, compasses, GPS receivers, tiny speakers, and SD cards, which are recognized as storage devices by many other kinds of computers.
Apple Watch is crisp, beautiful, high-resolution screen that’s smaller than an Oreo cookie. No surprise, Apple knows what they’re doing when they design a home product. Much like the other additions to the Apple suite, the Series 3 is sleek and stylish. Everything from the navigation to the screen layouts has been optimized to utilize the space given rather than be constricted by it.