Korg

The MA-30 is the latest offering from Korgs innovative line of metronomes, with new features like volume control and sophisticated rhythms such as triplets and quadruplets with inner beats omitted.

Highly visual liquid crystal pendulum
13 different rhythms are built-in so you can practice to more than a click track
Rhythms include duplets, triplets, triplets with inner beats omitted, quadruplets, and quadruplets with inner beats omitted
Twelve reference pitches C4 -B4 for you to tune to
Adjustable calibration (438-445 Hz)
Adjustable volume
Tempo adjusts from 40-208 bpm
Tap function for setting the tempo
Earphone jack so only you can hear it
Memory backup function
Approximately 250 hours of continuous use