Feature 1 The lens itself is a T2 mount, which can be installed on the telescope to observe the moon, etc. Through the standard adapter ring, it can be installed on the for Nikon camera for shooting distant objects. 2 Fuselage is made of high quality aluminum material, which has delicate texture. 3 Manual focusing adjustment, optical glass multilayer MC coating. 4 It has a 420800mm/16.531.5inch ultralong zoom, and with a 2X teleconverter, the focal length range becomes 8401600mm/33.163inch. 5 Telephoto lenses are good for shooting distant scenery, wildlife, concerts, bird observation, etc. 6 Its ultra powerful 2X Teleconverter, which can double the focal length or magnification.Condition: 100% Brand New Weight: Approx.1058g/37.3ozOptions: Black, White420-800mm Lens Parameters:Item Type: Telephoto LensMaterial: Plastic + Aluminum Alloy + Optical GlassFocus Mode: Full Manual FocusFocal Length: 420-800mm/16.531.5inchAperture: F/8.3-16Front Filter Diameter: 67mm/2.6inchAnti-shake Function: NoneApplicable Models: for Nikon F Mount Camera (need to Install the Standard Adapter Ring to Use)2X Teleconverter Parameters:Material: Plastic + Aluminum Alloy + Optical GlassCoating: MC CoatingInterface: T2 MountMagnification: 2X Package List1 x Lens1 x Front Lens Cover (Installed)1 x Rear Lens Cover (Installed)2 x Storage Bag1 x Adapter Ring1 x Wrench1 x 2X Teleconverter (Lens Cover Installed)