JBW Watches The G4 in Gunmetal. Live the way you fly with this jet-inspired timepiece. With a uniquely crafted dial resembling the cockpit of the gulfstream G4 jet, this watch is made for the globetrotter. The large 52 mm face boasts Swiss movements with three time zone settings; perfect for a spontaneous trip to Paris, Tokyo or a private island. The grand, yet sleek G4 comes with several band options including stainless steel and calfskin leather. If all that wasn't enough for you jetsetters, we added a hint of luxury with 16 diamonds for that extra touch. Gentlemen, prepare for take off.