Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Far From State Of The Art

This is a halogen incandescent bulb headlight designed to be driven by a bicycle hub dynamo or a so called sidewall or bottle dynamo.it is inexpensive but the light output is minimal compared to many LED dynamo headlights available. In order to prevent the light bulb burning out at high speed Shimano installs a 9.6v 5 watt bulb even though the dynamos that power the light are nominally 6v and 3 watts. This bulb choice greatly decreases the light output at mormal riding speeds. Far better would be for Shimano to install a voltage regulator circuit and a bulb that is closer to the nominal dynamo output.Much brighter LED dynamo headlights are available from multiple manufacturers that most people should find more satisfactory. Take a look on Peter White Cycles web site for extensive dynamo headlight information.