Which product design innovation is correctly paired with its revolutionary impact?

Throughout history, certain product designs have fundamentally transformed how we live, work, and interact with the world. These revolutionary designs often seem obvious in retrospect, but required extraordinary vision and persistence from their creators. Test your knowledge about iconic product designs that made history and changed industries forever. Can you identify which groundbreaking design feature truly revolutionized its market?

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The Sony Walkman's use of magnetic tape - The first portable music device that allowed private listening on the go, transforming how people consumed music
Apple's iPhone touchscreen - The first implementation of touch technology on a consumer electronic device
Dyson's bagless vacuum - The first vacuum cleaner to use cyclonic separation instead of filters
IKEA's flat-pack furniture - The original creator of self-assembly furniture that could be transported in flat packages