Citizen C7 Automatic Men 40mm Watch NH8391-51A Secondary Gemstone Type_Aquamarine The shorter 190 mm band

The shorter 190 mm band length improves wearability while maintaining the bold G-SHOCK aesthetic

Combining oversized styling

a perpetual calendar until 2100

making a statement wherever you go

sandblasted titanium grade 2

Citizen C7 Automatic Men 40mm Watch NH8391-51A Secondary Gemstone Type_Aquamarine The shorter 190 mm bandThe Citizen C7 NH8391 51A revives a classic with a modern twist, paying homage to the iconic Crystal Seven from 1965. This 40mm automatic timepiece features a crisp white dial housed in a polished stainless steel case, paired with a matching bracelet for a clean, contemporary look. A standout detail is the heptagon framed day window, a nod to the original design, complemented by sharp indices and luminous hands. Powered by the 21 jewel Calibre 8200