It looks very good but the reviews on Amazon for the previous model say the battery life is only 50 minutes on high. My commute is longer than that sometimes (if there are headwinds). I don't really think I'd buy a light with a battery life of less than an hour. For a light of this type with a separate battery (as opposed to torches) I want 2+ hours.
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Work: the 8 hours that separates bike rides.