I love the Hasbro Black series stuff, I have an Iron Man helmet, Cap shield and Infinity Gauntlet. For the money (sometimes as low as £50) they are the best way to get into collecting or in my daughters case, wearing the helmet of your favourite superhero.
They are made of hard plastic but have loads of detail and are well painted.
On the Ant-Man one you take off the respirator to access the battery compartment. For this one the batteries power coloured LED’s to make them blue or red.
Inside we have the usual plastic adjustment to fit to your head size.
The antenna come separately in the box and require fitting.
If you’re an MCU fan that wants a great looking prop for your shelf then I can’t recommend these highly enough.