I just purchased the small Korg MM2, in order to work in a position without Dranger my companion.
IDAL is the little gadget in this context.
Practical and easy to use:
- Rglage volume
- Rglage the beat: 0,2,4,5,6,7, eighth, triplet, double
- Rglage the tempo of 40,208 (in increments)

For twenty euros tool fulfills his contract.