This is a Citizen BM6400-00E Eco-Drive field watch with a stainless steel case and a green canvas strap.

• Movement: Uses Eco-Drive technology, meaning it is powered by light and does not require battery replacements.

• Water Resistance: Rated for 200m water resistance, suitable for most water sports except diving.

• Case Details: Features a stainless steel case with a 41mm diameter, a screw-down crown, and luminous hands and markers for visibility.