The Korg TM-40 is a versatile tool for any guitar player. This digital metronome and guitar tuner has a large display for easy visibility. It is made of durable plastic and comes in a sleek silver color. The TM-40 is a great addition to any musician's collection and is perfect for use during practice or performances. It is a reliable tool that is easy to use, making it ideal for both beginners and experienced players. The metronome function allows for precise timing and the guitar tuner ensures accurate tuning.