Casio Men's CARBON MUDMASTER Solar Radio Triple Sensor GWG-2000-1A1JFProduct Highlights The GWG 2000 retains its dust and mud resistant structure for missions in sandy and muddy environments, while incorporating new exterior technology to downsize and enhance comfort. By adopting a newly developed forged carbon bezel and a carbon core guard case, downsizing has been achieved. The newly developed Mud Resist buttons, combining stainless steel button pipes with silicone cushioning material, have enabled a slimmer profile.