Steady burn LED Identity Light "POLICE" in reverse text, To be legible when viewed in rear view mirrors. Many jusristictions are now requiring lilluminated marking for unmarked, or "slicktop" units. This product was developed for this relatively new requirement. Unit is built into the popular Talon Series housing and comes with the standard suction cup and mounting bracket. ( Product shown here with the optional WHE-TLNBKT3D, visor clip mount).