Tuvok gestures to the phaser.
"This is a simulated phaser. Phasers are the primary weapon used by Starfleet personnel. This is the pistol variant, but there are also rifles and larger variants used for ship to ship combat."
"The power level of a phaser can be adjusted. At the lowest setting, which is the most commonly used, phasers knock most humanoids unconscious. At intermediate settings, phasers kill most lifeforms. At the highest setting, a handheld phaser will vaporise most lifeforms. More usefully, it will also cut though most but not all metals."
"A phaser dies not need to be reloaded, although it must be recharged after heavy use at high power levels. It can fire in short bursts or in a continuous beam."
"Any questions?"