1. Lighted up through using of a battery pack attached to the glasses by a thin wire
2. Battery pack contains a clip which can be clipped to a belt, top of pants, or inside a pocket, and the wire can be run discreetly under the back of your shirt.
3. Battery pack features on/off switch with 2 modes: A steady, always-on mode and a strobe/blinking mode.
4. Operated by 2 x AA batteries(not included)and utilize a medium sized poly-resin frame.