Casiotron 04-504

Today I'm wearing one of the original Casio LCD watches.

The watch is one of the Casiotron range which were the name for the first line of Casio LCD watches. The line started in around 1974 and featured many different designs of LCD watch, but most of the first models had a square LCD display in a large thick case.

This is the model 04-504 with a QW04 module. This is a similar model to the 04-502 watch i posted about in 2012 (which I mistakenly thought was a modern remake). This design has a round centre to the face with the LCD display in. The display is a standard old model with  3 1/2 digit time and day marker along the top. The day marker also has a second function in that it flashes to show the seconds (with the number printed below the day).

This model also came with a mesh strap, and other models online seems to have the same strap as this one - but unusually, it isn't a Casio brand strap (it is Kreisler).

The back has the usual information, and the battery is changed with a coin opened slot.

Casio Casiotron 04-502

Back to the retro again today!
When Casio first released their LCD watches in 1974, they started the Casiotron range. The Casiotron was the first digital watch which could show year, month, date, day, hour, minute, and second.

I think that this is one of the limited re-release versions from 1997,which were issued to commemorate the first Casiotron, but it could be one of the originals from around 1975. It uses an old-style LCD module with hour and minute on the display, along with a bar across the top for seconds (-a marker flashes every second above a number showing which group of 10-seconds).

The watch has a model number of 04-502, using the 04 module used by other 1970s models.