This Tengent Theta has a 3-15 magnification range, 50mm objective, 30mm tube illuminated reticle and a side parallax adjustment. This scope was built to satisfy the needs of police and security marksmen. It is a durable option with less weight than their other offering with a 30mm tube. It has excellent optical clarity and mechanical functionality. If you are looking for a scope that will allow you to operate in rough conditions and still know that you will be able to put the crosshairs on your target and hit your mark than look no further.