Casio G-Shock DW-6900FL-6MJR Bape RARE Bape lrg blue purple SNAKE KILLER DW 6900 - seller's description.

There seems to be a growing fashion to put the word "Bape" in the description of any slightly unusual G-Shock. Possibly excusable here as it is a DW-6900 but I have also seen it applied to a Frogman. Anyway this looks half decent:

http://www.ebay.co.uk/itm/Casio-G-Shock-DW-6900FL-6MJR