: The primary appeal is the novelty duck shape. It is extremely lightweight (approx. 60g) and small (47x37x40mm), making it more of a conversation piece than a high-end audio device.
This response uses data provided by Google's Knowledge Graph Hampenberg Duck Toy Mp3
: It is a "Clip MP3" style player with no screen. Controls are typically limited to simple buttons for play/pause and track skipping. : The primary appeal is the novelty duck shape