The metronome kit allows you to build your own working electronic metronome. Features include a small speaker, flashing LED, and the ability to switch between several different time signature options. The kit includes a three digit seven-segment display to display the speed in beats per minute and runs off of three AA batteries. This is a great kit for aspiring musicians interested in stepping into electronics. And, since all components are through hole, it's a great way to develop your soldering skills and build something fun at the same time.