Lightsaber usually by the jedi and sith Lord and dark or other jedi lightsaber trained people hold, and in the traditional sense of cold, the body of the lightsaber is the is emitted by a light sword hilt, hilt in general about twenty to thirty centimeters long, can be designed according to user's personal needs into specific patterns. It contains a Keiper crystal, which is injected with energy to release plasma that can be harnessed by magnetic fields to form a colorful blade. The magnetic field buzzes as the lightsaber switches on and off, and as the lightsaber swings.