Also very useful if you decide to grab a razor and give your watch a shave.
I've tried a few methods of cleaning but generally avoid over-saturating the watch with anything and follow a different approach:
- When it comes to the bezel insert, I avoid using anything that will leave residue. A mild dilution of car wash (without wax) and luke warm water on a cloth will do for the head and bracelet. I use such a mild dilution that a wet microfibre cloth is enough to 'rinse' it away.
- With rep ceramic bezel inserts, the surface of the painted engravings on the V7 insert is a dull, matt finish so it traps oil from your hands/fingers and body - this makes the bezel indeces look quite dull.
A lot of detergents and cleaners also leave residue (glycerine, etc) which has the same effect.
I've found that cleaning the bezel numbers with pure isopropyl alcohol (electrical contact cleaner) and a q-tip removes the oil very well, making the bezel engravings look much brighter. I do this every couple of days - it only takes a moment and as long as you're careful not to get the bezel greasy again, this generally helps the numbers shine out in a more gen-like fashion : )
On watches other than the rep ceramic Sub C, I generally use a product called Plexus. It's very gentle and neutral but as it contains glycerine, it doesn't quite deliver the shining bezel insert numerals I desire, hence the method above.