CITIZEN CA4640-09A

The Citizen Eco-Drive Chronograph CA4640-09A is a men's sport watch featuring a solar-powered movement, a stainless steel case, a black leather strap, and a white dial.
 

• Movement: Powered by Citizen's Eco-Drive technology (Caliber B620), which uses any light source for power, so it never needs a battery replacement.
• Power Reserve: Approximately 9 months on a full charge, even in the dark.
• Case Material: Made of durable stainless steel.
• Case Dimensions: Features a case diameter of 41 mm and a thickness of 12 mm.
• Weight: The watch weighs approximately 78 grams.
• Glass (Crystal): Protected by hardened mineral crystal (also referred to as crystal glass), which is resistant to scratches and moderate impacts.
• Water Resistance: Rated for 10 bar (100 meters / 330 feet), making it suitable for swimming and snorkeling but not professional diving.
• Dial and Hands:
  • Dial Color: White, with a clean and classic look.
  • Luminescence: Hands and indices are treated with a "luminous" material that glows in the dark for enhanced readability in low light.
• Strap Material: Comes with a black calf leather strap, providing comfort and a classic look.
• Clasp: Secured with a traditional pin buckle (tang buckle).
• Functions:
  • Chronograph: A 1/5 second stopwatch function that can measure up to 60 minutes.
  • Date Display: A practical date window located between the 4 and 5 o'clock positions.
  • 24-hour Display: Includes a sub-dial for 24-hour time tracking.
  • Tachymeter: A scale on the inner bezel used to calculate speed.
  • Warning Functions: Equipped with an insufficient charge warning and overcharge prevention function.