The Cube Clock is a wooden block clock from Uma. It has a digital LED display that appears when you clap or make any sound. Just clap on, clap off, and the clock lights up. Has an alarm mode too. I’m not totally sure I see the point of this clock, I guess it’s just supposed to look like a block of wood and blend in to your decor until you’re ready for the time? Whatever it’s purpose, it looks pretty neato.