Instruct: Classify a review into positive or negative sentiment.
Query: Watch out, other Petzyl Tikkas are great, but not this one!

I've depended on Petzyl Tikkas for daily use for years, and didn't even understand how there was variation between them, considering they are named the same. But this one does not have the button for 3 light settings (hi, lo, blink), it just has on/off, which for me is too bright for reading with new batteries. It also is somehow made with inferior machining (or mine are bad luck) because for 1st time this one doesn't provide steady light, but occasionally flickers a bit like the connections are iffy. Which is more irritating than it may seem. Not like a candle, more like a constant reminder to swat your head and see if the thing gets fixed. So, go for the slightly more expensive Tikkas that have the button, not slide switch, and have never in my history of owning 6 flickered.