This means that if your batteries die, the TL-LD500 will be as effective a reflector as the ones you find on the backs of bicycles. It runs on two AAA batteries, and will run for 100 hours in its blinking mode, and 50 hours in its constant-on mode. Using the clothing clip, I attach the TL-LD500 to my belt just above my butt, or clipped to the back of a baseball cap if I'm wearing a longer jacket. I also use it in blinking mode, as it appears to be much more noticeable this way. Just about anything you can do to make yourself more visible at nighttime is good.
Reflective tape is helpful, as is reflective clothing.
One pair of jogging shoes I own has reflective material on the back of each shoe which is extremely noticeable at night. Of course, the safest nighttime riding choice a scoothead can make is to simply not do it at all. Truth be told, this option receives our highest recommendation. Scooters are small, and can be difficult for even the most vigilant automobile drivers to see, not to mention the many numbskulls that get behind the wheel. If you insist on nighttime scooting, however, take as many precautions as you can, and make yourself as visible as possible.