Red White Blue Flashing Hearts Motion Activated. These require two AA batteries (not included). When someone or something passes near the face, the circuit is activated and the hearts double flash alternately like police lights with a small circle of white LEDs. The circuit is activated for about 30 seconds. After a short delay, the circuit is ready to activate again when it senses movement. This is a unique gift for your loved one. Batteries will last a long time with normal use.