Nite Ize Ridelit Bicycle Light Man-Made Materials Enter your model number above to make sure this fits. Man-Made Materials Parabolic lens creates a flood beam that illuminated a 4 foot area Glow & Flash modes Parabolic lens creates a flood beam that illuminated a 4 foot area Glow & Flash modes Features two easily replaceable batteries (2  3v 2016 lithium batteries)  an extra set of batteries is also included! Weather resistant Simple push-button on/off operation