Casio Oceanus OC-500 Alarm Chronograph. 100M water resistance. 39mm case. Watch Head only. No Bracelet. Battery replaced and running. Case and crystal have wear. 

Because they have not been serviced, all used/vintage watches are sold as is. 

I have recently acquired a portion of the left over inventory from the House of Seiko watch repair/jewelers in San Francisco. I will be posting many watches, straps, bracelets, parts ect over the next few months. Check my store for more watch related listings.