This is the Casio G Shock G Lide White Watch GBX 100TT 8DR. These new models are from the G SHOCK G LIDE sports line, which has become a favorite choice of the world s top surfers. The GBX 100TT features phone linking and colors inspired by surfing and time travel between the present and past. The present is represented with color and the past with monochrome, creating the image of a surfing trip between the present and the past.