Ball Engineer Master Ii Aviator Automatic NM1080C-L13-BK is a men's model that is a perfect match for formal and business outfits. This modern watch runs thanks to a self-winding movement that is powered by the motion of the owner's wrist. The model is made of stainless steel of high quality covered with a black coating, which is resistant to scratches.The watch is on a durable brown leather strap which provides a good fit on wrist. The easy-to-read dial is covered by a sapphire crystal that is resistant to even the biggest scratches. A water resistance of 100 meters means the watch can be worn when swimming and freediving.