Moon shield 60 rear light the shield 60 provides up to 60 lumens of light output the high output rear light is fully rechargeable via usb connection to either mac or pc up to 60 lumens light output 1 x cree xpe led tool free quick release bracket constant and flashing modes water resistant vertically adjustable low battery indicator 37v lithium polymer battery usb rechargeable up to 6 hours runtime 2 hours charge time rated 45 by roadcc