BERGEON 8008 Rubber Ball to Open and Close case Backs Ø65 mm, black,white, Open

Excelente calidad

A quality tool.

This is a basic grippy rubber ball designed to remove screw-type watch backs. I don't see how it would be any different from a more expensive model by the original company that makes these (Bergeron). As others have pointed out, this comes only partially inflated and you will need to fully inflate it using a bike pump or equivalent with a needle adapter. This will open many watch backs once properly inflated, but don't expect miracles. A Rolex clone opened no problem, but a genuine Omega Seamaster wouldn't budge and required a watch back wrench. Also make sure your watch isn't a pry-back first, as this has no effect on those!

Good quality, good packaging

I need to regulate my Tudor Blackbay since it started running slow. I tried other die-type openers but none would grip the teeth on the case back, so I thought I'd try this before going to a watch maker When I ordered this I didn't think it would work removing the case back off of my Tudor but it did! And with little effort. I was amazed. Very easy to use. I highly recommend