The Mark II is a prototype. It is mainly used to test and explore the performance of armor. Armor is the original color - silver. It belongs to the experimental power suit, so it is not painted. Tony went home and spent two months developing his first piece of armor (the classic face shape), which improved the power system, flight stability system, and reinforced the outer steel armor.I think the unpainted Mark2 is the best collection, the best metal texture, you can even DIY into any color. The helmet is made of aluminum alloy and carved by CNC, but the finished product is rough and needs to be polished by hand,the surface is polished with P500 sandpaper, and then polished with P800, P1000 and P1500 sandpaper until smooth, and then polished with polishing machine. The whole process is very cumbersome and time-consuming,but the finished product is very beautiful. The helmet is not lined, you can also wear it, if your head’s width is within 17.1cm. Face plate relies on magnets to attach to the helmet. Main Material: Aluminium alloy, LED Weight: 4pounds(1.8KG) Powered supply: 2*CR2032 button batteries. ( Not included )