Size: Overall length: Approximately 313mm
    Overall width: Approximately 47mm
    Tube diameter: 25mm (1 inch)
    Objective diameter: 50mm
Weight: Approximately 475g
Material: Aluminum alloy
Power source: CR2032 1 piece
Magnification: 3-9 times (variable)
Brightness adjustment : 5 steps
reticle: red / green
Accessories: 1 set of mount ring
    Cleaning cloth
    Hexagon wrench
    Lens cover

There is a dial for rectil illumination on the upper part of the eyepiece lens, and the brightness is adjusted in 5 steps each of red and green. I can.