Internals

Wiki (Unitra)
CEMI Clock Chips

It’s a Polish watch from the 1983, interestingly the movement as well as the IC were built in Poland by CEMI. The strap is original and is manufactured by POLO-SPORT – a brand that was used for selling sport goods in communist Poland, not to be confused with Ralph Lauren clothing.

Internals

Board

Version with plastic IC cover in front and tape in the back to get a better contact to the LCD screen.

Version without the cover (IC visible) and a different oscillator.

Display with zebra contacts

Ingrated Circuit

This is a watch version of MC1202 chip.

Manufacturer mark on the IC: CEMI and ITE-1202E

different kindS of cover

REassembly