Stay safe while cycling with this Clip-On Bicycle Safety Light featuring a three-position push switch for flashing and turning on and off. It is black plastic with a red lens over lights and has a 1" screw and nut closure for the clip mount pivoting attachment. Operates on 2 "AA" batteries which are not included. The light case is approximately 2 3/4" x 1 3/4" x 1". Comes packaged in a blister pack.