Boldly daring this sporty watch conveys maximum info at a glance. This 1/20 second chronograph measures to 60 minutes with perpetual calendar 12/24 hour time dual time alarm and rotating inner ring. The 48mm stainless steel rose gold-tone case with screw-back complements the rich brown leather strap with white contrast stitching and is 100 meters water resistant. For over 40 years Citizen s Eco-Drive technology has served as the prime example of how the brand is dedicated to making the world and its environment a better place. A simple yet revolutionary concept Eco-Drive harnesses the power of light from any natural or artificial light source and converts it into energy. Using a renewable natural resource instead of filling our landfills with discarded watch batteries. SPECIFICATIONS BAND: Leather Strap Buckle CASE MATERIAL: Stainless Steel Pilot s Rotating Slide Rule Dial Ring DIAL: Luminous Hands and Markers WATER-RESISTANCE: 10 ATM FUNCTIONS: E820 1/20 Second Chronograph Measures up to 60 Minutes Perpetual Calendar Dual Time (Second Time Zone) 12/24 Hour Time CASE SIZE: 48 mm CRYSTAL: Anti-Reflective Mineral Crystal