Seiko Astron SSJ005 3X22 GPS Solar Ceramic Bezel Black Hamilton and the buttons are knurled

and the buttons are knurled for easy operation

Charge with either USB or solar

Maurice Lacroix has introduced a series of changes to the AIKON Quartz

Date - Helium valve - unidirection diver bezel

Water resistance to 10 ATM

Seiko Astron SSJ005 3X22 GPS Solar Ceramic Bezel Black Hamilton and the buttons are knurledCaliber Number 3X22 Movement Type GPS solar Accuracy 15 seconds per month (without receiving a GPS signal and at temperatures between 5C and 35C ) Exterior Case Material Stainless steel (super hard coating) with ceramic bezel Crystal Sapphire crystal Crystal Coating Super clear coating LumiBrite Lumibrite on hands and indexes Clasp Three fold clasp with push button release Other Details Water Resistance 10 bar Case Size Thickness: 11 Diameter: 39