Absolute toughness The MTG-B1000VL of the MT-G series of watches, which are known for a construction that combines metal and resin, boasts a striking multi-colored design that represents volcanic lightning*. *Lightning caused by volcanic eruptions is generated by the triboelectricity of water vapor, volcanic ash, volcanic rock, and other materials erupting from a volcano. The specific mechanism at work is unknown because it occurs in such a unique environment and is difficult to study. The MTG-B