The watch measures approx. 36mm wide x 40mm long x 13.5mm high. It uses a magnesium lithuim battery. A small Microchip PIC microcontroller runs the watch. The display is made of red and green suface mount 7-segment displays from SunLED. There are 3 buttons to operate the watch: one mode button on the left which selects the timer on first press daily alarm on the second press and the time on the third press. On the right side there are two buttons used in conjunction with the mode button to set the time and alarm. The watch is constucted from ABS plastic sheet cut out and cemented together and then spray painted flat black. My inspiration for designing the watch was Roger Reihl a great man who was ahead of his time. Here are some more pics.
Down button and up buttons(small microswitches salvaged from radio)
Back of case
Mode button
Top of case with 2 solar cells removed from two $1.00 wal-mart calculators
Battery and some of the Kapton circuit board visible underneath and to the right of batt..
I hope I answered most of your questions. Thanks for the interest.
tony.