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

Amazing! Who knew a simple tool that is so cost-efficient for it’s purpose existed? Also, love the 8-ball design! Works great, fits perfectly!

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

I had trouble opening an air tag to change out the battery. Tried everything I could find on YT and doc google. Finally I found a rubber ball that usually opens watch battery backs. I looked on Az and decided this one which cost a few bucks more but felt it was not a knockoff. Get it! Great price. Quality ball. And you can open any and all air tags, watch backs, etc. would buy again.

Works great. Never scratches.

…more expensive than it used to be (almost twice the price). It’s also listed in its description as a five pack, but it is only one ball. The rubber seems thicker than the off brand balls on Amazon (which I’ve also purchased). The plus of that is that it will probably last much longer, but it also isn’t as flexible. So if you squeeze the ball into a point to really put pressure on the case back, it may not squeeze down to so fine an edge, if that makes sense. If you’ve opened up watches with a ball, you’ll know what I mean. It also had a weird grease on its surface when I got it, that I had to wipe off. I sprayed it will a little alcohol, and wiped it off and it was fine. It’s great, but the $12-14 price is more than the $6-8 price it used to be. If you want the name brand that will last forever, this is it.

Simple and effective. Surprised at how well it does.

Not sure if I am using it improperly, but I couldn’t get it to open a single watch-back of mine.

Great item used to open watch after purchasing a kit that was 10 times this value which couldn’t open this particular watch. This item which is great quality and value and easy to use. It was effortless to open the watch after purchasing this item. Left no scratches on case. Easy to store.