Clear glass, crisp dot... terrible design - Leupold DeltaPoint Pro 1x0.71-1.05in Reflex Red Dot Sight

Here's what's intolerable about this sight.

1) The brightness adjustment requires you to place your finger in front of the sight window, blocking the dot so you have to do this press, move finger, press, move finger dance that takes forever to get to the right brightness.
2) The battery compartment is held down by a slide wedge that itself is locked in with a cheap-feeling detent. Twice during firing this detent backed out and in one instance the battery came flying out. Unacceptable.
3) Compared to other options, the battery life of this is terrible. 300 hours or so compared to 40,000 hours on some other units. Had I known this from your website (which didn't list this information), I wouldn't have bought it.