This is the latest model from MASTER OF G, the G-SHOCK series of watches designed and engineered for use by those whose work takes them into extreme environments scattered with rubble, dirt, and debris. The basic black coloring of this model further enhances the rough and tough look of the resin material and the MASTER OF G design. Base model is the MUDMASTER GGB100, which uses carbon material that delivers a new level of shock resistance, and dust and mud resistance. This tough new watch puts functions that support high level performance at your fingertips.