Seiko Core SSC139 Watch Color:SSC139 Acetate is a plant-based material

Acetate is a plant-based material that's more flexible and impact-resistant than standard plastic

allowing you to fit single vision

black and tortoise

softer eye shape

The RB4181 is offered with multiple lens treatments: solid color G-15 green and brown lenses

Seiko Core SSC139 Watch Color:SSC139 Acetate is a plant-based materialSolar Alarm Chronograph Powered by light energy No battery change required 6 month power reserve once fully charged 12 hour alarm Chronograph measures up to 60 minutes in 1 5 second increments with split time measurement function When the measurement reaches 60 minutes the stopwatch automatically stops counting Date Calendar Hour, minute and small second hands LumiBrite hands and markets Screwdown caseback Case diameter: 43. 0mm Stainless steel case