It will be available from April 24.
The Apple Watch sport will start at $349
Apple has said the watch will launch in April
Google launched Wallet in 2011.
Yahoo Inc plans to spin off its 15 percent stake in China's Alibaba Group Holding Ltd, responding to pressure to hand over to shareholders its prized e-commerce investment valued at roughly $40 billion.
With 1.35 billion users of its Internet social network, Facebook Inc would rank as the world's second-most populous nation if it were a country.
Many app makers have stopped work on their projects or abandoned them, mostly because of the lack of customers or limitations of the device.
Google Inc is expected to command more than a third of the world's $140 billion digital advertising spending this year
The documents shed new light on how the government dealt with US Internet companies that were reluctant to comply with orders from the secretive US Foreign Intelligence Surveillance Court, which rules on government requests to conduct surveillance for national security issues.
Apple Inc unveiled a watch, two larger iPhones and a mobile payments service on Tuesday as Chief Executive Officer Tim Cook seeks to revive the technology company's reputation as a wellspring of innovation.
Apple is expected to introduce its first new product since the iPad in 2010, a smartwatch, later on Tuesday.
Has Steve Jobs' handpicked successor inherited the magic touch or is Apple's winning streak coming to an end?
The move marks a significant ramping up of one of Facebook's most closely watched new advertising products, which analysts believe could help the Internet company capture a bigger slice of lucrative brand advertising budgets.
Facebook, which announced the move in a post on its official blog on Wednesday, is working with streaming music services Spotify, Rdio and Deezer to offer the music previews.
Google, which is working on projects including self-driving cars and robots, has become increasingly focused on artificial intelligence in recent years.
Shares of the world's No. 1 online social network soared as much as 15 per cent in extended trading before suddenly falling to $47.40, down 3 per cent from its $49.10 close.
The valuation was more conservative than the $15 billion some analysts had expected for the social media phenomenon, potentially attracting investors who might consider the money-losing company's listing price a better deal, with room to rise.
The eight-year-old online messaging service gave potential investors their first glance at its financials on Thursday when it publicly filed its IPO documents, setting the stage for one of the most-anticipated debuts in over a year.
Shipping will start fall.
The acquisition is expected to increase Yahoo's audience by 50 per cent.