Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very bright! so far so good, dead on day 93

the light is very bright. I have it mounted on my wife's rack. In fact it is so bright, that I have a hard time riding behind her in the morning as its blinding! My only complaint is the on/off switch, its just a cut portion of the plastic - I have some concerns about its life span. Plastic does not tend to last very long when it gets flexed frequently.Update after 93 days, the light now shuts off after I het any bumps. I can press the red enclosure tighter and get it to turn back on again, but on the next bump it may shut back off. I suspect the batteries are just poping lose.None the less this is not a good situation. I emailed planet bike about it - no response and I suspect it only has a 90 day warranty. So it lasted as long as they (planet bike) needed it to.AVOID IT!