This is a classic Seiko 5 Automatic watch, specifically a full lume "Railway Time" dial model in a light lemon/green color, with model number or movement 7S26-02C0 (or similar from the famous Seiko 5 family with 7S26 movement and 21 jewels). Basic information about the watch: Brand and Type: Seiko 5 Automatic Men's. Movement: Seiko's automatic mechanical movement caliber 7S26 with 21 jewels (relies on hand movement for self-winding). Dial: Full lume dial in light green/lemon color with outer minute track in "Railway Time" style, with a day and date display window at 3 o'clock. Material: Stainless steel case and bracelet.