Which retail giant lost approximately $170 million on a failed product line designed to compete with Apple's iPad, with devices being pulled from shelves less than 50 days after launch?

Even the world's most successful companies have launched products that failed spectacularly. These missteps cost millions in development, marketing, and damage to brand reputation. This trivia challenges you to identify one of the most notorious product failures in retail history - one that has become a business school case study on market research, product development, and brand extension limits.

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Microsoft with the Zune music player
Amazon with the Fire Phone
HP with the TouchPad tablet
Google with the Glass smart glasses