Many possibilities in this little box.
Mtronome of 40 208 beats / minute.
Large screen with a big dot on the top left and right alternately with a virtual pendulum swing between these two positions.
Since there are two types of "beep" can be rgler measures 2 times, 3 times etc ... up to 7 times.
There are also sub-divisions between the "beat" is shaped notes, triplets, eighth double edge, sixteenth notes, etc. ...
Very practical, the "tap" tempo that allows Determines the tempo by typing Manir synchronizes a key. The tempo is averaged over dduit qq actions.
Function "tuning" with the mission of "the" by default, but the 11 notes of the scale.
Rglage prcis with "the" from 413 Hz (very Baroque) 445 Hz
Caution, do not wait particulire of musical sounds made. The horror.
Function "mute" for quieter operation.
Little foot to keep it vertical.
Never changed the battery for at least 7 years.
The only default is the absence of signal lights (LED type), much more convenient in the case of a visual game that the wrong balance about ... For this, turn to a kind mtronome CASIO (heavier and more intensive 9V battery, but with a nice sound +).
Headphone jack (2.5 mm, such hands-free kit not included) (no test.