1. Smartwatch
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The smartwatch consists of a cuboid body and two watchbands; the upper watchband has a rounded rectangular hole at the end which can pass through another watchband; there are 13 holes on the upper watchband; there is a rounded rectangular protrusion in the middle of the back of the body; there are U-shaped elements where the body and the watchbands are connected, with a rounded rectangular protrusion in the middle of the U-shaped elements; the end of the lower watchband has a round element on the front and a mushroom-shaped protrusion on the back.