A nice unit for the price, the Night Owl Discovery Titanium has a small frame and soft-touch buttons that are easily manipulated.  The objective assembly includes a condenser lens to increase brightness, and this version includes a powerful infrared illuminator.

There are many different variables that effect the distance that one can see with a night vision device, among them the object's size, the level of details being sought from the object and the conditions of observation.  Night vision devices detect much further under a full moon and clear skies than they will under a new moon and cloudy skies.  Many different formulas are used to determine the statistic of maximum viewing range and this varies by manufacturer, so ultimately the generation of the intensifier tube is much more relevant than any quoted statistic when determining the maximum viewing range.

All night vision devices sold by B&H have mechanisms in place to protect the intensifier tube from a sudden burst of bright light, but this does not mean that bright light doesn't damage the device.  Bright light in any form is not good for the longevity and performance of image intensifier tubes.