Solar christmas lights party string lights for Christmas Trees bedroom flower decoration Wedding Each fixture requires 2 AA batteries (include) is simple to open or close. Has a red LED light next to the on or off button to indicate the mode. The flashing LED matches the pattern of the wire,4 settings constant, slow flash, fast flash, and off. It is flexible and bends easily,The Neon Glowing Strobing is evenly smooth for the entire length of the wire. The power source is compact and has a clip built it, and should be really easy to hide in any costuming (provided it isn't skin tight). This thing makes us visible from all angles,perfectly safe riding at night.