Flipping the light on its back will present a small section of the bezel that can be pried out. It is a small plastic strip with hooks that have to be disengaged to be removed.

Push the blade of the jimmy directly into the crevice above the cover. Once it has gone a few millimeters, tilt it to lift the cover slightly.

Slide the jimmy to the right side and press it against the latch to release it. Do the same for the left side.

A "jimmy" is essentially a small putty knife with a strong, slightly flexible blade.

Note: Despite the images shown, a spudger is not recommended as the fit is so tight it takes quite a bit of effort to insert and slide.