Used a week at sea at shallow dives, with a Lumix LX5. I was not sure what to expect with this product, though he had read many positive reviews online. The case is well suited to the Lumix LX5, I fit in without problem. The zip closure is extremely powerful and guarantee a perfect seal, combined with the two successive scratches. The rendering of the photos is excellent, I could not be more satisfied. To add additional security, I put a paper towel between the device and the zip, just to soak in the event of a leak, but everything came out perfectly dry. On handling under water, I had read that it is not easy to access the device options or change the dial to switch from image mode to video mode. This is most likely true. Having a shortcut button for video on the Lumix, I have not had this problem. The button on the back are easy to access, no problem on that side, if needed for new settings. Namely that's still more comfortable on land for setting the device (at least in my case). So I preset the device before diving. The only discomfort I had was to see the screen. The brightness is not great once under water and soft plastic of the case does not help.
In summary for the money, a perfect result. I recommend this product for those who do not want to invest in a waterproof case, at least ten times more. For a few days in the year, this case is perfect.