CEO Tim Cook pitched the pricey timepieces at an event in San Francisco, where he aimed to convey that there will be a style of Apple Watch to suit everyone's taste.
The CEO also addressed speculation about the watch's battery life as well. The Apple Watch will run for 18 hours with typical usage, he said.
"Apple Watch is the most personal device we've ever created. It's not just with you, it's on you," Cook told the crowd.
There are three basic editions -- the sports model, in silver or "space-grey" aluminium; a standard model, in silver or black stainless steel; and the high-end gold edition. Each comes in two sizes, with a 38mm or 42mm display.
The small version of the standard edition will be priced from $549 all the way up to $1,049, Cook said, or from $599 to $1,099 for the larger version. The big range reflects the wide choice of straps available, including options in metal, leather and synthetic rubber.
The sports version will be priced from $349 for the small version and from $399 for the larger version, Cook said. It's available with the synthetic rubber strap in a choice of colors.
The gold high-roller edition will be available in limited quantities from $10,000 for the small version and $12,000 for the larger model. Depending on the strap it can reach as high as $17,000.
The watches can all be pre-ordered from April 10 and they'll be delivered starting April 24, Cook said. They'll be available initially in the U.S., the U.K., China, France, Germany, Japan, Hong Kong, China, Canada and Australia, with other countries to follow as quickly as Apple can manage, he said.
Apple had already said a lot about the watch when it showed it in September. It is, in a lot of ways, like a small, clever interface to your iPhone that you wear on your wrist. But there are also some nifty features unique to the watch.
It will work with the new iPhone 6 and iPhone 6 Plus, of course, but also the 5, 5C and 5S. That's important, because the watch has to be paired with an iPhone for all its features to work.
It's Apple's first new category of product since it launched the iPad five years ago, so there's a lot at stake. Just as the iPad triggered a huge market for tablets, Apple hopes its watch will prove there's a mass market for a smart timepiece.
Key to its appeal are the elegant design and the user interface, which uses clever tricks to make maps, messaging and other apps easy to use to the small screen.
One of those tricks is the winder, or digital crown, which Apple demonstrated again on Monday. Turning it lets you zoom in and out of maps or scroll through messages, and pushing it takes you to a constellation of colorful app icons on the home screen.
An update to iOS released Monday includes a new app that works with the watch. It'll let you browse and download Apple Watch apps, add contacts to it and manage notifications, Cook said.
"We think Apple Watch is going to quickly become integral to your day, so we've designed it with all day battery life across a range of activities," Cook said. In a "typical day" you can expect 18 hours use, he said.
Also novel is the "taptic engine," which notifies you of a new message with a tap on the wrist, but also works with other apps, like maps -- when you're walking down the street, one type of tap on the wrist tells you to turn right, another type to turn left.
There are also unique ways to communicate. Digital Touch lets you draw a picture on the screen that appears on a friend's device right away. And if you press two fingers on the screen, the built-in heart rate sensor sends a recording of your heartbeat. Apple calls it an "intimate" way to say hello.
The watch is obviously a timepiece, too, with a huge variety of digital and faux analog displays to choose from. It's also a fitness tracker, with built-in components that measure your activity and pulse rate.
There's no keyboard, but you can dictate messages using voice recognition, or send an audio recording. There's also a clever text analysis engine that reads incoming messages and formulates pre-written replies. So if someone asks if you want "Italian or sushi", the watch prepares replies that you can choose from and send back to answer that question.
We already knew the watch works with Apple Pay, and in September Cook talked about an app from Starwood Hotels that will let you check in and open the door to your hotel room using your Apple Watch. That will be available in all W hotels in the spring, he said at the time.
Another app from BMW will show you a map of where you parked your car, in case you forgot, and an app from Honeywell will let you set the temperature in your home. Others are in the works from Pinterest, Nike, Major League Baseball and Citymapper, Cook said.
Martyn Williams covers mobile telecoms, Silicon Valley and general technology breaking news for The IDG News Service. Follow Martyn on Twitter at @martyn_williams. Martyn's e-mail address is martyn_williams@idg.com