Bergeon es de lo mejor. Ayuda a quitar tapas traseras roscadas de relojes. Excelente producto y llegó antes..

After gouging an old (thankfully not precious) quartz watch to change the battery, I thought there had to be a better way for a non-expert to open a watch!It's the 8008 to the rescue. When I first received the ball (in a crushed box, thanks to Amazon's habit of shipping boxes in envelopes!) it was pretty weakly inflated. In this state, it simply could not be coaxed to open a watch. After inflating it to a reasonably firm state (with the standard needle valve), it works like a charm. So that is the only gotcha about this great product. Buy it, make sure it is pretty firm, and enjoy not scratching your screw-back watches with metal tools.

Turned up promptly and was as described. Great tool for opening and closing watch case for repairs or battery replacement - essential for anyone wanting to service their own watches.

My Omega Seamaster developed an easily fixed issue, IF you can get the back off.With this, I was able to get the back off and fix the problem.Does what it says it will do, can't really ask much more.

Will open the back of most watches. Very happy with my purchase.