The best selling Lumina series in a smaller and lighter package. NiteRider makes this headlight USB rechargeable for convenient on-the-go charging. Its light weight makes it quite suitable as a helmet mountable option as well as bar compatible-standard and oversized 35mm diameters.Note: The NiteRider Lumina is shipped from the factory in Travel Lock Mode. This mode feature is designed to save battery power by preventing the head light from accidentally turning on while in storage. Simply press and hold power button 8-10 seconds to lock / unlockItem SpecificationsBatteryRechargeableLumens Front950Recharge TypeUSBWeight130 NiteRider Lumina Micro Series Headlight Headlight, Rechargeable UPC: 702699068148