First and foremost, the Movado Connect runs on top of the standard Android Wear specs package — a Snapdragon Wear 2100 processor, 512mb of RAM, and 4GB of storage. It also includes a 1.39-inch 400×400 AMOLED display, 300mAh battery, and a typical array of sensors including an accelerometer and gyroscope. There’s also an ambient light sensor here and support for NFC, meaning you’ll be able to use Google Pay with this watch.
A smartwatch is a wearable computer in the form of a wristwatch; modern smartwatches provide a local touchscreen interface for daily use, while an associated smartphone app provides for management and telemetry (such as long-term biomonitoring). While early models could perform basic tasks, such as calculations, digital time telling, translations, and game-playing, 2010s smartwatches have more general functionality closer to smartphones, including mobile apps, a mobile operating system and Bluetooth connectivity. Some smartwatches function as portable media players, with FM radio and playback of digital audio and video files via a Bluetooth or USB headset. Some models, called 'watch phones' (or vice versa), have complete functionality of a typical smartphone using LTE technology.
Pebble (watch) was an innovative smartwatch that raised the most money at the time on Kickstarter reaching $10.3 Million between April 12 and May 18, 2012. The watch has a 32-millimetre (1.26 in) 144 × 168 pixel black and white memory LCD using an ultra low-power "transflective LCD" manufactured by Sharp with a backlight, a vibrating motor, a magnetometer, ambient light sensors, and a three-axis accelerometer. It can communicate with an Android or iOS device using both Bluetooth 2.1 and Bluetooth 4.0 (Bluetooth Low Energy) using Stonestreet One's Bluetopia+MFi software stack. Bluetooth 4.0 with low energy (LE) support was not initially enabled, but a firmware update in November 2013 enabled it. The watch is charged using a modified USB-cable that attaches magnetically to the watch to maintain water resistance capability. The battery was reported in April 2012 to last seven days. Based on feedback from Kickstarter backers, the developers added water-resistance to the list of features. The Pebble has a waterproof rating of 5 atm, which means it can be submerged down to 40 metres (130 ft) and has been tested in both fresh and salt water, allowing one to shower, dive or swim while wearing the watch.
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
The Charge 3's screen has 40-percent more active space than the Charge 2 has, and it makes for a better touchscreen overall. From the watch face, swipe from top to bottom to reveal the notification drawer; from bottom to top to see the daily dashboard; and side to side to see available apps. Transitions between screen pages are smooth, and stick-figure animations in apps like the Exercise app move with ease.
Smart watch Company OS Android version iOS version CPU Type Bluetooth NFC Developer Options GPS Notify Link Loss Alert Notify Missed Call Notify Timer Notify View Content Call Conversation Find My Phone Voice Control Respond to Notifications Notify Sound Notify Backlit Screen Notify Vibration Ambient Light Sensor Gyroscope Magnetometer Multi-touch Accelerometer Dust and Water Resistance Clock Display Type Screen Size, Inches Screen Resolution, pixels Pixel density, ppi Display Technology Average Battery Life, days Battery Capacity, mAh Battery Technology Case Diameter, mm Case Thickness, mm Wrist Band Width, mm Weight (main unit+watchband), g Wristband Options Replaceable Wristbands LED Flashlight
The new Diesel Full Guard 2.5 has a 47mmx56mm casing which is bigger than most Wear OS watches, and there’s a 1.39-inch display at the center of that. This new refresh of the watch also includes NFC for Google Pay support, a heart rate sensor, and built-in GPS. Diesel also says this watch will last two days on a charge from the 300mAh battery. The watch also has 3ATM water resistance.
To charge the watch, you have to clip on the charger and align it with contacts that you can't see when you're clipping. Why make it so complicated? There's no NFC for easy pairing, and you have to find the smartwatch app in the app market, download it, and install it on your mobile device. The Frame's display readability in bright sunlight was judged to be only good. It's relatively heavy, at 2.7 ounces (only the Toq is heavier).
If you want a smart watch that uses cellular data without using up the battery, consider upgrading to the Samsung Gear S3. A close cousin to the Gear Sport, the S3 has all the perks of an LTE smart device (downloading apps, texting, checking email) and, unlike the Apple Series 3, it won’t quit after three hours. In fact, you could feasibly get 72 hours out of this LTE version of the Samsung Gear Sport.
The Series 4 now has several new health-focused features, which are very intriguing, including the ability to detect when you fall and even alert emergency contacts if need be, as well as an electrical heart rate sensor that works with an app to alert you to heart health issues. The electrocardiogram (ECG) app has been certified by the Food & Drug Administration, but it's not out yet.
Fitbit OS 2.0 brings a new-look UI that offers more insights into your daily data and quick reply support for messages for Android phone users (iOS support coming at a later date). You can still download apps and a whole lot of watch faces, pay from your wrist using Fitbit Pay and tap into Fitbit Coach, while new women's health tracking has also been introduced for the first time, which is also available for the Ionic, too.
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. 
The Galaxy Watch comes in two sizes, 46mm and 42mm, both with an OLED display and an “optimized” chipset that extends battery life. For the larger model, you can squeeze 6 days out of a single charge while the smaller model still offers up to 4 days. As you’d expect, the Watch also includes features like GPS, water resistance, and there’s NFC for Samsung Pay.
Of the scores of Wear OS by Google (also called Wear OS, and formerly Android Wear) smartwatches that function nearly the same, the Fossil Q Explorist and Fossil Q Venture are the ones we recommend for most people. Similar models that differ mainly in size and design, these two Fossil watches offer style and band options for the widest range of tastes while performing as well as (or better than) anything else out there. They handle notifications and your responses without delay, provide all-day battery life, swiftly handle voice transcription and Google Assistant questions, and provide casual fitness tracking. Their buttons and screens are responsive. They look and feel like good watches, too, which is something we think most people want from a smartwatch at this point.
As you’d expect, it has GPS and GLONASS alongside a heart rate monitor to bolster its fitness credentials. Other features include offline Spotify support, which is great for anyone who wants music without having to carry along their phone. Tizen is currently the only watch operating system to offer offline Spotify, too. Unfortunately, Tizen app support is otherwise lacking compared to rivals.
Samsung’s Gear Sport is not as stylish as Fossil’s Q watches, and because it runs Samsung’s Tizen operating system instead of Wear OS, it has nowhere near the app support of Wear OS. But as a smartwatch that shows your phone notifications and lets you respond to them, lasts all day, and tracks your recreational workouts, it is a great device. It’s not meant for competitive speed training, but it has built-in GPS and heart-rate sensing, offline Spotify storage, and a rotating bezel that’s much easier to use while exercising than a touchscreen. It does suffer from weak voice transcription and a barely-there S Voice “assistant,” but it fits a lot of core smartwatch functions into a relatively smart-looking package that’s better for fitness-minded wearers than our top picks.
If fitness is your top priority, the Apple Watch Series 1 has a good number of shortcomings compared with a dedicated fitness tracker. It doesn’t have onboard GPS, so you’ll need to carry your iPhone to accurately track outdoor activities, like running or cycling, and it’s not waterproof enough for swimming. And unlike a dedicated fitness tracker, the Apple Watch can’t automatically detect and track workouts—you have to manually start it—though this feature is coming with new Watch software this fall. And Apple’s built-in Activity app doesn’t provide much detail, so if you want to dig into your fitness data, or access sleep tracking at all, you have to download third-party apps.
It doesn't get better than the Apple Watch Series 4. The new slimmer body and bigger screen make it sleeker and more stylish than ever before. The unique modern design works for both men and women. The smartwatch comes in 40mm and 44mm styles to fit wrists big and small. You can buy it in several finishes to match your style and there are dozens of Apple-made and third-party watch bands to make the Watch your own.
Other reviewers also like the Q watches. Simon Hill at Digital Trends writes that the Q Explorist is “an attractive smartwatch to use with an Android phone that will blend in at work or play at an affordable price,” and that, aside from the Apple Watch and the Gear Sport (for Samsung phone owners), the Q Explorist “compares favorably with the rest of the field.” Gerald Lynch at TechRadar summarizes the Venture as “a sharp-looking, comfortable smartwatch with a great display and responsive processor,” but knocks it for lacking GPS and a heart-rate monitor. Matthew Miller at ZDNet believes the Explorist and Venture are “priced fairly for nice looking fashion watches that also serve as smartwatches.”
Then your typical exercise activity will determine which model is the best fit. You can expect to pay $1500 - $350 for a fitness tracker. If you are simply interested in hitting your 10,000 steps a day, an entry-level Fitbit will do the trick for around $150. Garmin has fitness trackers designed specifically with runners and cyclists in mind, giving you accurate tracking of biking and cycling distance covered using GPS. They’ll cost more as a result - $350 - $800.
The watch faces themselves are classic Kate Spade designs. You get a sultry winking moon face with perfectly curled lashes, calling you a leading lady; cute bubbly balloons for a digital watch face with numbers; a speeding cab that reassures you that you'll be there in a New York minute; and a daisy that loses petals as the time ticks away in a classic game of "He loves me; he loves me not."
Aside from its display, the Ticwatch Pro is a pretty standard offering in the Wear OS world. It’s powered by the same Snapdragon Wear 2100 chipset, has a 400×400 1.39-inch OLED display, and has a 45mm casing. There’s also a 415mAh battery inside which charges with a magnetic charger. There’s also IP68 water/dust protection, and NFC for use with Google Pay.
The newest member of the TicWatch family from Mobvoi is the TicWatch Pro. The biggest feature about this smartwatch is that it actually has two displays. The first is a transparent and low-power FTSN LCD display, and that is placed on top of its OLED display. While the top FTSN display shows you basic info like the time, the date, your heart rate and step count, you can switch over to the OLED display, which shows off all of the features of Google’s Wear OS.
There's now a heart rate monitor, as the name suggests, for tracking beats throughout the day and during exercise, a GPS monitor to keep up with your workouts and an NFC chip to enable Google Pay. Add to that the ability to take this underwater up to 50 metres, all on the top of the refreshed Wear OS, and it all rounds out as a very complete smartwatch experience.
Although rectangular is the most common design, there are smart watches that have a circular display similar to regular watches. The Apple Watch is only available in the rectangular design. The circular design is available in the Samsung Gear S2, Moto 360, and LG G Watch R models. Many models have changeable straps, so you can dress casual, sporty, and formal.
Unlike the Apple Series 3, you can get third-party watch faces along with the default options. Many of these third-party faces also come with customizable widgets so you can manage layout without cluttering up your watch. From the homepage (which displays the time and date), you can twist the bezel to access fitness tracking data, like steps taken and calories burned, check the weather, change the song you’re listening to, or use any number of custom widgets.