I ended up washing my wife Garmin and it left scratches all over the titanium and sapphire glass. I thought we would need a new watch.I got the 4,000, 8,000 and 50,000 kit. I also purchased a Variac clone to control the speed of my Dremel and Drilax felt polishing pads. Using a Dremel tool at slow speed, I started with the 4,000 and it took less than 5 minutes to see the scratches gone!I then worked up to the 8,000 and the watch started looking better than new. I then used the 50,000 and the titSee full review