This is a SON dynamo light, considered the world's best. #tabascobikegears handles other bicycle parts. I can't go back to battery lights anymore... I can run forever without worrying about batteries! It's bright! I've started to enjoy riding at night. Please use it with hub dynamos such as SON NABENDYNAMO. The photos after installation show it mounted using the included bracket. Available in five colors: - Polished finish - Red - Black - Orange - Gold For 6-volt AC voltage (hub dynamo) Brightness: 100 lux ISO 6742 standard Weight (excluding cable): 75 g Power source: Dynamo *Prices may fluctuate due to exchange rate fluctuations.