Seiko Astron GPS Solar 42.7mm Watch Grad for her Case Back: A screw-down case

Case Back: A screw-down case back reinforces the watch's durability and ensures the inner mechanics are well protected

you can have it all: groundbreaking automatic movement with an aperture that reveals its inner workings

The watch is driven by the OMEGA calibre 4061

Case Size: 44mm

with a subtle texture and an open aperture to view the balance wheel of the movement

Seiko Astron GPS Solar 42.7mm Watch Grad for her Case Back: A screw-down caseFeatures: Caliber: 5X53 Jewels: 12 Overcharge Prevention Function Power Save Function Perpetual Calendar To The February 28, 2100 World Time Function (39 Time Zones) Dual Time Function Day Display Power Reserve Indicator GPS Signal Reception Function Satelite Acquisition Status Display Function Reception Result Display Function DST (Daylight Saving Time) Automatic Hand Position Alignment Function Case Size: 42. 7mm Dial Colour: Blue LumiBrite On Hands