>Is the Timex Indiglo an EL display?  If so, how do they power the
>inverter off those small lithium cells?  It's the only digital watch
>lighting system I have any time for <g>

I have been told that those watches use a chip Motorola designed
a few years ago. It is able to raise the voltage delivered by
the battery with an efficiency which is far better than the one of a
coil based system to feed the EL backplane.

Just for notice, Casio offers now in most of its wrist watches
a system similar to Indiglo called "Illuminator".

Gael