Resources

Not much about Unitra Warel Unitron 21 Watch in the Internet. It has a mechanism compatible with Unitron 11.

Documents

Internal

Board

This board is marked “ZC”. Compare to the board from Unitron 11, which is slightly different and is marked “ZC/8”. That page also has a microscope photo of the IC.

Cover

Reassembly

The plastic case is brittle and the corners where the telescopes sit tend to break. Here, the upper-right corner is reconstructed with a plastic welding glue.