This is without a doubt the very best shift light available today having a Super Tiny profile of 13mm X 61mm (.5in X 2.4in) and weighing a mere 49 grams (1.7oz) complete with loom.
Within the 100% Carbon Fiber case is  a full Microprocessor sampling your RPM signal in 16bit resolution at 0.0000045 of a second (222,222 times per second).

In addition to this there a 3 intensity settings so that you won't get blinded at night or not see it on a bright summers day. The DSII also is touch sensed so there are no switches or buttons, you simply touch it with your finger and it will react immediately.