Citizen Promaster Dive 46mm Eco-Drive Watch #BN0231-01L

Model Reference: BN0231-01L

Overview
The Citizen BN0231-01L, affectionately known as the "Orca," is one of the most visually distinctive timepieces in the Promaster Sea collection. Its design is entirely inspired by the anatomy of the killer whale, featuring a bold, organic aesthetic that breaks away from traditional dive watch geometry. The silver-tone stainless steel case is paired with a deep blue dial that uses large, elliptical indices to mimic the markings of an orca. With its substantial 46mm presence and unique "fin-shaped" strap, this ISO-compliant diver is a functional tool designed for high legibility and maximum impact underwater.

Technical Specifications

Case Size: 46mm (Bold, oversized professional profile)

Case Material: Silver-Tone Stainless Steel

Movement: Eco-Drive (Caliber E168; light-powered technology with a 180-day power reserve, requiring no battery changes)

Crystal Type: Convex Mineral Crystal (Raised and domed to follow the curvature of the bezel)

Water Resistance: 200 Meters (20 ATM / 666 feet) — ISO Compliant for Scuba Diving

Dial: Blue dial with oversized "Orca-spot" luminous indices, a red-accented minute hand, and a date window at 3 o'clock

Bezel: One-way rotating elapsed-time bezel with unique scalloped indentations for easy grip with diving gloves

Strap: Blue polyurethane strap designed with a contoured shape that mimics an orca’s dorsal fin, featuring a stainless steel buckle

Special Features: * Orca Design Language: From the curved case back (which features a stamped orca graphic) to the elliptical dial markers, every element reflects the marine mammal's form.

Superior Lume: The oversized indices are filled with a high-intensity luminous material that glows brightly in deep-water conditions.

Robust Protection: Features anti-magnetic and anti-shock resistance, along with a screw-down crown to ensure a complete watertight seal.