Citizen combines a bold and sporty look with light-weight Super Titanium™ creating a timepiece that is not only great looking but comfortable to wear. Created from Citizen's proprietary Super Titanium™ technology with a surface hardening finish called *Duratect. The Ti+IP timepiece is 40% lighter than stainless steel and 5 times harder to resist scratches, perfect for the man on the go. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number J810.