Seiko Astron GPS Solar Duel Time SSE107 G-Shock G-Steel Black and Mustard GSTS120L-1B The same MMT-365 App that

The same MMT-365 App that accompany Horological Smartwatches is available to Frederique Constant E-Strap customers

eco-friendly

Weight 157g

Maintaining the asymmetrical face design that has been the iconic look of this series since its start in 1993

buckle: Butterfly in stainless steel

Seiko Astron GPS Solar Duel Time SSE107 G-Shock G-Steel Black and Mustard GSTS120L-1B The same MMT-365 App thatSeiko Astron GPS Solar Duel Time SSE107 Astron is the first watch to automatically recognize all time zones on Earth. With the touch of a single button, Astron adjusts to the correct local time everywhere on the planet.* Always accurate. Seiko Astron is accurate to one second every 100,000 years, thanks to the time signal it receives from the Atomic Clocks in each GPS satellite. Astron never stops. Astron receives all the power it needs from light