Microsoft has unveiled a new line of products including smartphones and a wearable fitness tracker that run on its Windows 10 software.
The company has also updated its Surface range of laptops with a removable keyboard, which allows them to function as a tablet.
The Surface Book is a new device with a 13.5-inch display with 267 pixels per inch and features a trackpad made of glass starting at $1,499 (£980). It has also launched a successor to its Surface Pro devices, the Surface 4, which features a sixth-generation Intel Skylake processor and costs £749.
Microsoft showed three phones at the New York launch event: the Lumia 950 (£450) and 950XL (£550), both of which are due to go on sale in November, and the cheaper Lumia 550 (expected to cost around £130) which will be released in December.
The Lumia 950 includes a 5.2-inch display and a Qualcomm Snapdragon 808 processor with hexacore CPUs. The Lumia 950 XL has a 5.7-inch display and a Snapdragon 810 processor with octa-core CPUs. The 550 has a 4.7-inch HD display and runs on Qualcomm's Snapdragon 210 processor.
The larger phones can make use of Continuum, a feature new to the brand that allows users to plug the devices into a dock connecting it to a bigger screen, keyboard and mouse. At that point the phone will act like a traditional Windows PC with a desktop and apps that adapt to the larger display area.
The Microsoft Band 2 was also revealed, which is designed to let users monitor their fitness and exercise regime and will be priced at £200 when it becomes available on October 30.
Unlike its predecessor Band, Microsoft's entry product in the wearable technology market a year ago, the new Band 2 has a curved display, which uses the Corning Gorilla glass 3, and has a barometer sensor to track elevation.
"We're moving people from needing to choosing to loving Windows and these devices promise to fuel even more enthusiasm and opportunity for the entire Windows ecosystem," chief executive Satya Nadella said at the event.
It has been a bad year for Microsoft, which suffered its biggest-ever quarterly net loss in the three months to June 30 after taking a $7.6 billion writedown on its Nokia handset business.
However, it said that 110 million devices were now running Windows 10, the operating system which launched at the end of July.
The company’s shares were up 0.6 per cent at $46.89 after the new product announcements.