Silver color.  Great for drivers, students, night watch guards.  Anyone who needs to stay awake without fail.  Place behind your ear.  If you head nods forward an audible beep sounds to wake you instantly.  Built in LED reading lamp makes it easy to read a map or other material without having to turn on the dome light and distract the driver or wake the kids in the back seat.  Great for reading menus in a darkened restaurant. We tested the LED reading light and it ran for over 90 hours before we turned it off.  And it was still burning brightly.