Yes. You are correct. The light is always on but The m99 pro has a motion sensor. Once the bike stops, it turns off in a couple of minutes. doesn’t drain the battery beyond a few minutes.@Pushar, Ravi is saying that the M99 Pro will always stay on unless you remove the battery. Is this true? I assumed that when the bike stops moving the light completely turns off after few minutes. I can't imagine the light being on constantly draining the battery even when it's parked.