Citizen Eco Drive Gn-4w-s-12g Manual |work| May 2026

: Look at the back of your watch for a string of characters like XXXX-XXXXXXX . The first four alphanumeric characters (e.g., H800 , E650 , or H144 ) represent your movement caliber.

: Exposure to natural or bright artificial light is necessary to keep the rechargeable cell healthy. citizen eco drive gn-4w-s-12g manual

: If the second hand moves in two-second increments , your watch has low power and needs immediate charging. : Look at the back of your watch