I suppose most of the people who will use the Leica Apo Televid 82 scope will be watching birds - or animals. Some few more might regard it as the ultimate luxury for peering downrange when doing target shooting. Yet others might watch through barbed wire and dragon's teeth at the local demilitarized zone.
Whichever pursuit you intend to follow you can be assured of the best of German optics:
Water and dirt repellent exterior coating. Padded to absorb vibration and sonar beams from Soviet submarines.
Waterproof to 5 metres, like Soviet submarines.
HDC multicoated lenses.
Flouride glass.
25x - 50x variable zoom eyepiece.
Dual-focus system - a coarse wheel separate from the fine wheel.
Iron ( plastic...) sights for general orientation.
Rock-solid tripod support foot.
Leica warranty.
This is a supremely bright scope that is not at all fatiguing to the eye - you can use it for careful scientific observation hour after hour. It is not inexpensive, but Leica quality optics guarantee that your money is well-spent.