The lightsaber, sometimes referred to as a laser sword, was a weapon used by the Jedi and the Sith. Lightsabers consisted of a plasma blade, powered by akyber crystal in Jedi weapons or a Sith crystal in Sith weapons, and emitted from a metallic hilt. It was a weapon that required skill and training, and was greatly enhanced when used in conjunction with the Force. Though also used by the Sith, the lightsaber was synonymous with the Jedi, with some in the galaxybelieving only Jedi used lightsabers.
Lightsabers were generally used both for combat and defense. A lightsaber could cut through virtually anything, from enemies to blast doors. The only ways to block the incoming attack of a lightsaber was with an electrostaff or another lightsaber. When used defensively, a skilled user could deflect blasterbolts with a lightsaber, and even reflect the shots back toward the shooter or some other target. Experienced Jedi could even employ their lightsabers to absorb Force lightning. Most practitioners used one, single-bladed lightsaber, though some used double-bladed lightsabers or even multiple lightsabers at once.
By approximately thirty years after the death of the Galactic Emperor, Darth Sidious, Kylo Ren wielded a red crossguard lightsaber that extended with two miniature blades.
"This is the weapon of a Jedi Knight. Not as clumsy or random as a blaster. An elegant weapon for a more civilized age."