'Dr Metronome Vibration' is Drummer's Metronome for strict tempo keeping.
This is useful when you use it in noisy place.
1. simple operation (It is very important. Because drummers generally use metronome with stick in their hands)
2. accurate click sound
3. flash display with click
4. tempo range : 60bpm - 180bpm
5. alternate half screen flash
6. one "VIBRATION" per two count
7. tap tempo function
more information : http://iphone.iiv.jp