The Apple Watch will be available in seven more countries – Italy, Mexico, Singapore, South Korea, Spain, Switzerland and Taiwan – from 26 June.
The company's first ever wearable smartwatch will be available at Apple Online Stores and select Apple Authorised Resellers.
Apple made the announcement in a press release.
"The response to Apple Watch has surpassed our expectations in every way, and we are thrilled to bring it to more customers around the world," said Jeff Williams, Apple's senior vice president of Operations.
He added: "We're also making great progress with the backlog of Apple Watch orders, and we thank our customers for their patience. All orders placed through May, with the sole exception of Apple Watch 42 mm Space Black Stainless Steel with Space Black Link Bracelet, will ship to customers within two weeks. At that time, we'll also begin selling some models in our Apple Retail Stores."
The Apple Watch is currently available in Australia, Canada, China, France, Germany, Hong Kong, Japan, the UK and the US.
The Apple Watch is an intimate and immediate communication device with a health and fitness companion. Highly customisable for personal expression, the Apple Watch brings an entirely new experience to receive information at a glance and interact with the world through third-party apps designed specifically for the wrist.
The Apple Watch introduces revolutionary technologies including the Digital Crown, an innovative way to scroll, zoom and navigate fluidly without obstructing the display. The Retina display with Force Touch on Apple Watch senses the difference between a tap and a press, providing a new way to quickly and easily access relevant controls. The Taptic Engine discreetly delivers a gentle tap on your wrist whenever you receive a notification or message.
The iOS developer community has already created thousands of apps for Apple Watch with new apps for customers to explore and discover every day.
Apple Watch wearers in these countries can now book taxies, keep track of flights, navigate airports, explore cities, book movie tickets, among other things.
The Apple Watch app that comes with iOS 8.2 or later on iPhone lets wearers browse, buy and download apps from the App Store for Apple Watch.
10 Corso Como in Milan, BOONTHESHOP Cheongdam in Seoul and Malmaison by The Hour Glass in Singapore will have a curated selection of Apple Watches at launch.
The Apple Watch is available in three collections, Apple Watch Sport, Apple Watch and Apple Watch Edition, crafted from custom rose or yellow 18-karat gold alloys.
Customers who purchase from Apple will be offered Personal Setup, in-store or online, to customise and pair the Apple Watch with their iPhone, showing them new apps from the App Store for Apple Watch and more.
Customers can also explore and choose their favourite Apple Watch in the Apple Online Store or through the Apple Store app for iPhone and iPad.
The Apple Watch requires iPhone 5, iPhone 5c, iPhone 5s, iPhone 6 or iPhone 6 Plus running iOS 8.2 or later, the press release said.