

Shell Star Big Date
Description
The Shell Star collection traces its origins back to 1975, when DELMA introduced its first professional dive watch under this iconic name. This pioneering timepiece set a benchmark for the brand, inspiring a legacy of robust and reliable divers’ watches.
The latest Shell Star Big Date stays true to its heritage while integrating modern advancements. Built for the toughest conditions, its brushed stainless steel case features a screw-down crown for enhanced durability, a helium escape valve, and an impressive water resistance of 500 m / 1650 ft. The bold, applied luminous orange indexes and a black unidirectional bezel ensure optimal readability in any environment. A striking gradient blue dial is complemented by an orange-framed big date display at 12 o’clock, balancing functionality with a distinctive aesthetic.
Designed for both everyday wear and professional diving, the Shell Star Big Date comes fitted with a resilient stainless steel bracelet. Meanwhile, the automatic movement, visible through the transparent case back, underscores its precision and craftsmanship—making it a true companion for underwater adventures and beyond.
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Tech Specs

CASE DIMENSIONS
Diameter 44 mm
Height 13.8 mm
Lug width 24 mm
Lug-to-lug size 51 mm
Case Material
316L stainless steel with helium escape valve
Case Finish
Brushed and polished
Case Back
Screw-down stainless steel with 4 screws and mineral crystal
Bezel
Black anodized aluminum, unidirectional diver bezel
Crystal
Sapphire crystal with AR coating
Crown
Stainless steel screw-down
Dial
Hands
Hour, minute and central seconds with SLN C5
Bracelet
Stainless-steel three link bracelet
Clasp
Stainless-steel deployant clasp with pushers
Water-resistance
50 ATM / 500 m / 1650 ft
Weight
150 g
Movement

Caliber
ETA 2892-A2 with Jaquet 3512 Big Date
Winding
Self-winding
Functions
Power reserve
42 hours
Frequency
48'800 A/h
JEWELS
21