Redefining precision and design, the most accurate light-powered watch in the world. The distinguished Limited Edition CITIZEN Caliber 0100 with an annual accuracy of +-1 second and limited to just 500 pieces worldwide. With a focus on every detail, this brand new timepiece features an Super Titanium™ case and bracelet with contrasting black dial, showcased with a skeleton caseback and anti-reflective sapphire crystal. Featuring our Eco-Drive technology – powered by light, any light. Never needs a battery. Caliber number 0100.