Simple but effective - Bushnell 4x50 NightWatch Night Vision Monocular 264051

For the price you can't go wrong with this. Easy to use and focus plus it is highly effective up to 300 ft.
Pros: Great eye relief and focal capabilities up to 300 ft
Cons: Focus easily bumped out of place

This review was written in the old system and had content requirements that are different than reviews written today.