These flashlights are the ones to use when your task involves guarding a perimeter, investigating a field, and just need to get someone blind for a few moments. Use a spotlight with caution. You don't know when you'll swing it into someone's face on accident.
Spotlights can come in a few different makes. Some collect their batteries into one large body, whether that is length or diameter that grows can change. These can sometimes come with handles that are easy to carry. Other spotlights have bodies that ARE the battery, with a mode switch on the head.