What makes a lightsaber Neopixel is a way the blade is constructed. Typical lightsaber blades simply refract the light emitted from the hilt itself. Neopixel blades use a strip of powerful LED lights that go along the blade itself, making it brighter and more radiant.
Neopixel lightsabers are special because of their diverse effects. You can fully customize your Neopixel by choosing the shape, hilt color, and color of emitting light in the blade.