| 摘要 |
PURPOSE: A key chain including a buoy preventing the loss of keys underwater is provided to float the key chain on water when a loop fitted to hands or feet of a user is slipped. CONSTITUTION: A key chain including a buoy includes a loop(10), the buoy(20) with an empty inner space, and keys(30). The buoy floats the key chain on water. The loop enables users to hang the keys and the buoy on hands or feet. The buoy includes a displaying unit on the surface for displaying numbers. |
