Citizen is re-releasing the Promaster Navihawk, a men's watch with a bold design that appeals to the spirit of adventure. Equipped with Citizen's Eco-Drive technology and atomic clock, which is said to be the most accurate clock in the world. Also useful in business situations♪ Color: Dial = Green Bracelet = Black Size: Case (diameter) approx. 48mm x (thickness) 12mm Band width: approx. 22mm Arm circumference: Maximum approximately -cm Material: stainless steel, sapphire crystal Waterproof performance: 200m waterproof Functions/Features: Genuine product, atomic time, 1/20 second chronograph that can measure up to 60 minutes, perpetual calendar, power reserve display, city time zone display, sliding measurement scale, rotary navigation bezel with compass, 26 Time adjustment by time zone, day/date display, 12 hour/24 hour display Movement: Japanese solar quartz (Eco Drive)* Accessories: Genuine box *Our warranty is 1 year. *What is “eco-drive”? This refers to the mechanism of a clock that converts light into electrical energy. It has a built-in solar cell that generates electricity when exposed to light, and when the cell receives light, it generates electricity and operates the clock. In addition, excess electrical energy is stored in a secondary battery. Citizen is re-releasing the Promaster Navihawk, a men's watch with a bold design that appeals to the spirit of adventure. Equipped with Citizen's Eco-Drive technology and atomic clock, which is said to be the most accurate clock in the world. Also useful in business situations♪ Color: Dial = Green Bracelet = Black Size: Case (diameter) approx. 48mm x (thickness) 12mm Band width: approx. 22mm Arm circumference: Maximum approximately -cm Material: stainless steel, sapphire crystal Waterproof performance: 200m waterproof Functions/Features: Genuine product, atomic time, 1/20 second chronograph that can measure up to 60 minutes, perpetual calendar, power reserve display, city time zone display, sliding measurement scale, rotary navigation bezel with compass, 26 Time adjustment by time zone, day/date display, 12 hour/24 hour display Movement: Japanese solar quartz (Eco Drive)* Accessories: Genuine box *Our warranty is 1 year. *What is “eco-drive”? This refers to the mechanism of a clock that converts light into electrical energy. It has a built-in solar cell that generates electricity when exposed to light, and when the cell receives light, it generates electricity and operates the clock. In addition, excess electrical energy is stored in a secondary battery.