Citizen Promaster Diver 300M BN0085-01E "The Starburst"

The Artifact In a sea of matte black dive watches, the BN0085 stands out for two reasons: Depth and Design. First, it carries a 300-meter depth rating, exceeding the standard ISO 6425 specifications for recreational diving. It is built for pressure. Second, the dial. It features a mesmerizing radial sunburst pattern that explodes from the center. It catches the light in a way that feels industrial yet refined—like machined steel.

The Machine At its heart beats the Citizen Caliber E168, the heavy-duty variant of their Eco-Drive technology. Designed specifically for dive watches, it has high torque to push those massive luminous hands and practically infinite power reserve as long as it sees light.

The Bezel: Aggressively knurled for grip, even with neoprene gloves.

The Lume: Citizen’s proprietary blue luminous compound, applied thickly to the oversized indices for instant legibility in the dark.

The Condition Grade: Excellent. This example is in superb condition, showing minimal signs of wear.

Case & Bezel: Clean, sharp lines with no major scuffs.

Crystal: Clear and scratch-free.

Strap: Mounted on the original heavy-duty Citizen polyurethane dive strap, which remains flexible and fresh.

The Spec

Maker: Citizen

Model: Promaster Eco-Drive Diver 300m

Reference: BN0085-01E

Movement: Solar Quartz (Cal. E168)

Case Width: 44mm (Wearable, robust stance)

Water Resistance: 300 Meters (Professional Grade)

Crystal: Mineral Glass with Anti-Reflective coating

Why It Belongs Here: Most tool watches are purely utilitarian. The BN0085 manages to be a tank (300m rating) while also offering a dial texture that rivals dress watches. It is the perfect "Summer Watch"—rugged enough to drag through the surf, but sharp enough to wear to dinner.