SEIKO PROSPEX "Save The Ocean" Solar Tuna Diver's 200M SNE518P1 (SBDJ045)
Solar powered generating system, meaning that there is no need to ever change batteries
Caliber V157
Powered by light energy
Accuracy: +/- 15 seconds per month (between 5°C and 35°C)

Specifications
Stainless steel with black hard coating
Screw back. Screw-down crown
Diameter: 46.7 mm,
Thickness: 12.4 mm
Water resistance: 200 m diver's
Magnetic resistance: 4,800 A/m
Silicone strap