When the power goes out and bright light is needed immediately, you need a solution you can trust. The Model 4 LightStation is a wall mounted, self-illuminated kit containing industrial-grade SnapLights that pairs convenience with dependability. The Cyalume SnapLight LightStation refill pack includes yellow chemical light sticks measuring 10 long, for providing instant 360 degree illumination, that can be seen up to a mile away for up to 4 hours in optimal conditions. Also included in this refill kit includes are expiration labels and tamper pins for use with LightStation. SnapLight is waterproof, non-toxic, and non-flammable. Each light stick has up to a four-year shelf life from date of manufacture.