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.
The RC-1000 Wrist Terminal was the first Seiko model to interface with a computer, and was released in 1984. It was developed by Seiko Epson and was powered by a computer on a chip. It was compatible with most of the popular PCs of that time, including Apple II, II+ and IIe, the Commodore 64, IBM PC, NEC 8201, Tandy Color Computer, Model 1000, 1200, 2000 and TRS-80 Model I, III, 4 and 4p. The RC-20 Wrist Computer was released in 1985, under the joint brand name "Seiko Epson". It had a SMC84C00 8-bit Z-80 microprocessor; 8 KB of ROM and 2 KB of RAM. It had applications for scheduling, memos, and world time and a four-function calculator app. The dot-matrix LCD displayed 42×32 pixels, and more importantly, was touch-sensitive. Like the RC-1000, it could be connected to a personal computer, in this case through a proprietary cable. It was also notable in that it could be programmed, although its small display and limited storage severely limited application development. The RC-4000 PC Data graph also released in 1985, was dubbed the "world's smallest computer terminal". It had 2 KB of storage. The RC-4500 (1985), also known as the Wrist Mac, had the same features as the RC-4000, but came in a variety of bright, flashy colors.
Many major phone apps have Wear OS counterparts, or at least most apps that make sense to have a dedicated watch app. You’ll likely find yourself using most watch apps less than you might think, but they are sometimes convenient for avoiding a phone retrieval. I use regularly use the Nest app for my home thermostat, Keep to take down a quick voice note, PocketCasts to control podcast episodes and playlists, and Stronglifts to time and track workouts. But I use these on my watch mostly when my phone is not at hand; none is easier to use than its phone version. As noted, most apps on your phone will provide notifications that can be acted upon through your watch. For the apps that you do use, the Q watches’ screen (identical to most of the Fossil group watches’ screens) is responsive enough to work with tiny buttons pressed by big fingers.
Several of them also now support wireless charging which is hugely valuable as you avoid adding yet another cable and cradle to your dresser. Wireless charging pads are on the market that will charge your compatible iPhone and watch at the same time, and Apple is set to release its own official charging pad dubbed AirPower. Wireless charging is also available for Samsung smartphones and smartwatches.
Aside from its jack-of-all-fitness-trades, master-of-none nature, the Gear Sport has other drawbacks. Chief among them is that voice dictation is significantly less reliable than on the Apple Watch or Wear OS and is best used for short phrases and quick replies. Then there’s S Voice, the digital assistant that can’t do much—and you probably don’t have time to learn how to make it do the few things it can do. And major apps still do not have a presence in Samsung’s marketplace—the Sport runs Samsung’s Tizen operating system instead of Wear OS—so any app or device you want to control directly on your phone is a gamble on an indie developer having the same need.
Fossil’s Q Explorist and its smaller-wrist counterpart the Q Venture are well-made, responsive, fashionable Wear OS smartwatches that offer a lot of color and band options, making them the best option around. They ably run Wear OS (more on the pros and cons of Wear OS itself in a bit) and convey your phone’s notifications to your wrist. Their buttons engage with clean clicks, the Explorist’s center crown moves through lists and notifications much more effectively than swiping, and both screens are responsive and clear.
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.