G-Shock x Hodinkee John Mayer Ref. 6900-PT1,John Mayer and G-Shock are Back at it with the Latest Hodinkee Limited Edition - Worn & Wound,G-SHOCK Ref. 6900-PT80 By John Mayer,G-SHOCK Ref. 6900-PT80 By John Mayer,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,