Seiko Electra 23 Antimagnetic Mens Watch Gold Faux Diamond Indices Not Working.

The crystal is bezeled on the inside giving the face an interesting light reflecting quality. Case interior is marked "H.K. Potak Watch Parts & Fty Ltd, Hong Kong" likely dating it to the 1970s. It has a one-piece expandable, stainless steel, band also marked "Hong Kong". Interesting watch that needs servicing.

No Seiko serial number on this piece. 

Fits wrists 7 1/2" to 8" with some adjustability.