A combo light that does it all!  Can clip on your waistband -- or can be worn with the armband (included) - or can be attached to your bike (bike mount included).  Takes 2 AAA Batteries (not included).  LED display can be seen up to 2 miles!  6 different modes - from steady to flashing.  A great way to improve your visibility while walking/jogging/running - or biking!