The Kai pen is a discreet solution for both novice and seasoned cannabis users. Each pen contains 250mg of THC distillate mixed with natural terpenes. Take a slow pull and wait to feel the effects before proceeding. If the light blinks twice, that means the battery is protecting itself from overheating, and when it blinks five times, the battery is exhausted. A pull is considered to be three seconds of inhalation. No chargers, additional cartridges, or separate batteries are required to vaporize.