The 
Nuprol Phantom F DR 4 x 32 Scope + DR RDS Sight, FDE is an airsoft-specific, fixed-magnification scope with a top-mounted red dot sight designed for both long and close-range shooting. It is constructed from high-quality aluminum and features adjustable brightness, windage, and elevation settings. 
Key Features and Specifications
Magnification: The main scope has a fixed 4x magnification with a 32mm objective lens diameter.
Secondary Sight: It includes a fully adjustable "Doctor" red dot sight mounted on top for rapid target acquisition in close-quarters battle (CQB) scenarios. The red dot features adjustable brightness, windage, and elevation settings.
Material: The main construction of the sight is aluminum.
Durability: It is described as being shock, weather, and fog resistant.
Mounting: It mounts to any 20mm weaver rails using two side-locking quick detach (QD) levers.
Included Accessories: A soft padded carry case and a cleaning cloth are included with the product.
Usage: The manufacturer specifies that it is for airsoft use only and cannot be adapted for any other purpose. 
User and Expert Opinions
Versatility: Reviewers and experts from sources like Ammo Hive and Urban Airsoft praise its versatility for both long and close-range engagements, thanks to the combination of the fixed 4x scope and the top-mounted red dot sight.
Image Quality: It offers a clear, sharp image and a generous field of view.
Quality: One reviewer on Amazon UK described it as a "solid quality built piece of kit".
Ease of Use: Reviewers mention that the adjustable settings and quick-detach levers make it easy to use and adjust for various conditions.