Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good value, poor performance

This flashlight is great when it works. The flickering, as mentioned in other reviews, is unchanged by shaking or twisting the model. The light output is bright, but not as bright as a single-LED flashlight I already own. I would have expected brighter light from this 21-LED flashlight.Other than that, the flashlight is sturdy, lightweight, and it fits nicely in the palm of my hand.