G-Shock Gravitymaster Duo GRB300EC-1A Bulova Quartz G-SHOCK offers the first G-STEEL

G-SHOCK offers the first G-STEEL lineup models featuring chronograph performance in analog format

and more are made with bio-based resin

Case / bezel material: Resin

slimmer version of the iconic G-SHOCK design

GSTS100 (all variants)

G-Shock Gravitymaster Duo GRB300EC-1A Bulova Quartz G-SHOCK offers the first G-STEELWhatever youre doing, wherever you are the G SHOCK Master of G line has your back. Based on GRAVITYMASTER, MUDMASTER, and MUDMAN models that deliver peak performance in punishing conditions in the air and on land, this line features a black watch case symbolizing toughness, with accents in vivid emergency colours that capture the world of professionals involved in rescue efforts and other critical missions. The organic form of the GRAVITYMASTER GR