Model activitycyclingbike quantity1 battery quantity2 light typerear bike light power sourcebattery battery typeaaa emitter battery includedno includes1 x light flashing modes3 flashing patternsfast strobe slow strobe steady on others maximum brightness lumens200lm maximum runtime minutes200 minutes body colorred range distance200 500m range distance m200 500 light bulb typeled brightness lumenslower than 400 lumens featureseasy to carry ne