LED Stip 30cm 72SMD white beam have 2functions

always make white beam,

when running car lighting white beam,

when brake lighting  strobe white

can make 30cm,60cm,90cm

Also led strip 30cm 72smd also can make common function,just light white, or red, or green or yellow or blue

Voltage:DC 12V with no polarity

LED:3528SMD

With tube and glue do nice waterproof