Dropping the phone: Some models of smartwatches in the Samsung and Apple line-ups feature a mobile network chip, allowing you to plug in a micro SIM card to make and receive calls, texts and emails and access the internet without being paired to your phone. It sounds great, but remember that the smartwatch has a very small battery, so relying on it for communications will drain the power quickly.
I’ve worn a smartwatch almost daily for nearly five years as of this writing. I often feel that it keeps me alert to what’s happening, especially for things like texts from my wife and close friends, alarms that a parking meter is nearly expired, or reminders that dinner needs to start marinating or roasting. It has also encouraged me to get moving and take a walk when I’d otherwise stay in place. Sometimes it has made me feel rude, distracted, or overly attached to whatever little blip comes next. It has come in handy on my bike, and it has distracted me when I’m driving my car. Some of this can be better handled through settings and filters, but some of it comes from human nature.
The company claims that the SpO2 monitor will help its devices look for signs of sleep apnea and other breathing problems, potentially great features for devices that are meant to be worn 24/7. It'll be used primarily in Fitbit's forthcoming Sleep Score Beta, which further analyzes sleep quality using heart rate and breathing data. Starting sometime this November, users with devices that only have heart rate monitors can get a "sleep score" after each night's sleep. Those with an Ionic, Versa, or Charge 3 will presumably have better data thanks to the SpO2 monitor collecting breathing data.
Flaws but not dealbreakers: The Vívosport’s screen is highly sensitive to incidental brushes and touches; we ended up activating the screen auto-lock feature, a small annoyance. Compared with a dedicated GPS running watch, the GPS tracking on any fitness band takes longer to connect to satellites; and it’s easier to see your pace and other statistics on a running watch’s larger LCD screen while moving than on a fitness band’s relatively miniscule display. Garmin doesn’t have the motivating social network of Fitbit, so it’s less likely that your friends or coworkers will connect and challenge you, or that a corporate fitness challenge will work with your Vívosport. A fitness band falls short of a full-featured smartwatch, because typically it won’t give you a voice assistant, let you install apps, or let you interact with phone notifications, and many of those notifications will be difficult to read on the Vívosport’s small screen.
The era of the smartwatch is upon us – just look at the multitude of colourful straps and elongated or squarish screens people are wearing. From fitness trackers like the Fitbit and Garmin to the Samsung Gear and Apple Watch, there are a host of great options to combine fitness and activity tracking and message alerts on your watch, which incidentally will still tell you the time, along with the weather and even play your favourite music.
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.
Since the early days of modern smartwatches, we’ve sought to test as many relevant models as we can and recommend the watches that do the best job of making a smartwatch convenient and useful. We test Wear OS watches by wearing them while they’re connected to Android phones. Whenever possible, we ask other people to try out our potential picks to get an idea of how others react to a watch’s size, style, interface, and other features.
In the same year, Microsoft announced the SPOT smartwatch and it began hitting stores in early 2004. SPOT stands for Smart Personal Objects Technology, an initiative by Microsoft to personalize household electronics and other everyday gadgets. For instance, the company demonstrated coffee makers, weather stations, and alarm clocks featuring built-in SPOT technology. The device was a standalone smartwatch that offered information at a glance where other devices would have required more immersion and interaction. The information included weather, news, stock prices, and sports scores and was transmitted through FM waves. It was accessible through a yearly subscription that cost from $39 to $59.
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. 
Our top pick for most people is the Apple Watch Series 4 with GPS (starting at $399), which has a huge display, ultra-fast processor, Raise to Speak Siri, fall detection and a built-in electrical heart rate sensor for taking on-the-go electrocardiograms. It also runs watchOS 5, which makes the watch even more useful with automatic workout-tracking, offline podcast playback and a Walkie-Talkie voice chat feature.