G-Shock Watch MT-G Bluetooth Smart Tai Chi MTG-B1000TJ-1AER. Introducing the MTG-B1000TJ-1AER, a Tai Chi model by Chen YingJie. This model was designed by Chen YingJie who is a Chinese artist who creates works that incorporate traditional Eastern ink painting and Western street art. The design for this model is the Chinese philosophy of Tai Chi. The root of Tai Chi is the concept that all natural things and laws in the world change with the flow of time. This is expressed by the black ion plating and original print technology, and a back engraving. Like all MTG watches, they are assembled in Yamagata Japan, in our premium production factory. This model uses solar power, has up to two years power reserve, meaning your battery change worries will be a thing of the past, and has 3 year warranty. In addion it is Water resistant and Shock resistant.