Hoppes Number 9 and play with it.

 

I thought of that bc I do have it in one of my cleaning kits but I’m concerned about any residue making skin contact while wearing the watch. I guess if I thoroughly rinse it out it might work.

 

Dental floss or tape (tape is flatter), run a little silicon grease along it and pull it through under a section of the bezel at a time. This will clean out crud and get some lube in there. You'll be amazed/appalled at the color of the tape the first few pulls. Pull in a counterclockwise direction, otherwise the tape might get snagged in the bezel ratchet mechanism.

 

Dental floss.

Keep flossing until it stops coming out black. The wax on it is enough lubricant. Any added lubricants tend to attract more crud.

 

The shroud on the Monster makes it tricky…

 

I'd start with warm soapy water and floss.

 

Simplest way is to immerse it in a bowl/pot of water (not boiling) and operate the bezel several times. That generally loosens up debris that has collected & is how i clean my dive watches after being in the ocean, river, lake etc.

on a few old and very inexpensive watches, i was lazy and sprayed silicone, but that probably wasn’t wise. It does work, but it probably eventually gets more stuff stuck in there.

any half-decent watch repair place could pop the bezel off & clean and lubricate it and the spring, shouldn’t cost much.

 

Warm soapy water, a toothbrush and/or dental floss.

Slow and patience, scrubbing with very light pressure should help clean it up.

Good luck.

 

If it were me I’d just pop the bezel off and clean it with 50/50 vinegar/water mixture or soap and water. Then put your clean o ring in watch gasket silicone grease.

I would be hesitant to put your watch in soapy water unless you are confident it has retained it’s waterproofing.