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A GuestBrighter than the original SF, which I also consider great. The turbo's flash sequence is different, more random than the the original unit's steady blink, blink, BLINK. I couldn't pick out the pattern on the turbo, it seems completely random, sometimes with slightly longer periods between the large LED's blink's than the original SF has. I haven't decided if I like this but I'm sure it will be seen.
Probably the best taillight for the price.