gw4000-1a At a glance By wrapping an alpha-gel belt around the module as well as adding a layer underneath it and by employing aluminum washers & oiled o-rings beneath the screw heads that secure the band to the case, the new Aviator is now more resistant than ever to shock, vibration and centrifugal force., Casio G-Shock ADJUST time hands (HD) Hidden menu digital + analog times match GShock aviator GA-1000 - Duration: 7:30. BayBeansCoffee 245,078 views, G-Shock Premium GW-4000-1A3ER. This premium edition G-Shock adds atomic time to the features you would expect from a standard G-Shock. The high quality movement of the GW-4000-1A3ER also has self calibration built in - the watch is able to check for perfect positioning of the hands and corrects them if any alignment is out., We made a detailed guide on how to change time on your Casio G-Shock GW-4000 with images and steps. Yes, it is difficult at times to set correct time on GW-4000, but our instruction will help you. Yes, it is difficult at times to set correct time on GW-4000, but our instruction will help you., , .