Seiko Astron GPS Solar Chronograph Silvery Night - SSH153J1 SPB501J1 Water Resistance 10 bar Weight

Water Resistance 10 bar Weight 133

It is also slimmer than previous models

3mmLug-to-lug:37

Stopwatch: Stopwatch Measures 60 Minutes In 1/5th Of A Second Increments With Split Time Capability

It has an in-house quartz solar V192 calibre movement with an accuracy of +/- 15 seconds per month

Seiko Astron GPS Solar Chronograph Silvery Night - SSH153J1 SPB501J1 Water Resistance 10 bar WeightMovement Caliber Number 5X83 Movement Type GPS solar Precision 15 seconds per month (without receiving a GPS signal and at temperatures between 5C and 35C ) Power reserve Operating for approx. 6 months (when fully charged), power save: approx. 2 years Jewels 14 Functions Overcharge prevention function Power save function Chronograph up to 12 hours in 1 20 second increments Perpetual calendar to the february 28, 2100 World time function (38 cities)