A third and final John Mayer x Hodinkee x G-Shock collaboration (DW6900JM22-2 ) is launching today (December 13) - G-Central G-Shock Fan Site,G-SHOCK x John Mayer x Hodinkee 6900 PT-1 Watch | HiConsumption,G-SHOCK Ref. 6900-PT80 By John Mayer,G-SHOCK Ref. 6900-PT80 By John Mayer,Hodinkee and John Mayer Team Up with G-Shock for a Keyboard Inspired Ref 6900 - Worn & Wound