This is a Swatch Disco Lady watch (model number LK339G), also known as the Swatch Disco Women's Watch. With a clear plastic case and band measuring approximately 3.4 cm in diameter, this timepiece is a quintessential example of Swatch's innovative use of materials. The round case features decorative side lugs with circular cut-outs, adding a unique flair that stands out. Originating in the vibrant fashion culture of the 1980s, this watch is a perfect blend of functionality and retro style. Ideal for the discerning collector, it not only tells time but also serves as a stylish statement piece.