Serfas Raider USB Rechargeable Headlight, Black, One Size The industry's most technologically advanced safety lights All lights are RoHS compliant and all testing is done in house More efficient LEDs & high quality lenses to increase brightness & clarity USB Rechargeable 5 LED Light produces 70 Lumens Smart USB Charger makes it impossible to overcharge Quick and Easy installation - No tools required Can be mounted practically anywhere 4 modes that includes 2 flash modes