PO 600M Co-Axial 45.5mm: What bracelet model do I have?

[ara.hambone]

Hi All,

Looking for some help. I'm hoping to find a half-link to add to my bracelet, but I don't know which model number the bracelet is in order to determine which link I need.

Planet Ocean 600M Co-Axial Chronometer Chronograph 45.5mm
232.30.46.51.01.002

Or if there is an adjustable clasp I can buy, that would be good as well.

Thanks so much!