Seiko Prospex Speedtimer Automatik HBC003J1

Seiko Prospex HBC003J1 – Automatic 3-Hand with Motorsport-Inspired Design

The Seiko Prospex HBC003J1 combines robust everyday usability with the aesthetics of classic motorsport instruments. The compact 39.5-millimeter case, the automatic 6R55 caliber, and the inner rotating bezel with countdown function make this model a sporty and versatile Prospex watch.

Motorsport-Inspired Design

The design of the HBC003J1 is reminiscent of classic motorsport instruments. Clean lines, a functional display, and the inner rotating bezel give the watch a technical and dynamic character.

Compact Case with 39.5 Millimeters

With a case diameter of 39.5 millimeters, the Prospex wears comfortably and balanced on the wrist. Its compact size makes the model particularly versatile for both everyday wear and sporting activities.

Automatic Movement Caliber 6R55

Inside, the proven Seiko automatic caliber 6R55 is at work. This mechanical movement offers a power reserve of up to 72 hours and combines reliable technology with modern everyday usability.

Accuracy of +25 / -15 Seconds per Day

The caliber 6R55 operates with a stated accuracy of +25 to -15 seconds per day. This provides the watch with solid mechanical precision for daily use.

Inner Rotating Bezel with Countdown Function

A special feature of the HBC003J1 is the inner rotating bezel with countdown function. This allows time intervals to be flexibly monitored – for example, until the start of a race or for the duration of a pit stop.

LumiBrite for Better Readability

A triangle marker coated with LumiBrite aids orientation in the dark. This ensures that the watch remains easily readable even in poor lighting conditions.

Water Resistance up to 20 Bar

The Seiko Prospex HBC003J1 is water-resistant up to 20 bar or 200 meters, making it suitable for more demanding activities and sports use.

Technical Data

• Manufacturer: Seiko
• Collection: Prospex
• Reference: HBC003J1
• Target Group: Men
• Movement: Automatic
• Caliber: 6R55
• Power Reserve: Approx. 72 hours
• Accuracy: +25 / -15 seconds per day
• Display: Hour, Minute, Second
• Case Diameter: 39.5 mm
• Bezel: Inner rotating
• Bezel Function: Countdown
• Luminous Material: LumiBrite
• Special Feature: Luminous triangle marker
• Water Resistance: 20 Bar / 200 m
• Design: Motorsport-inspired

Sporty Prospex with 72 Hours Power Reserve

The Seiko Prospex HBC003J1 combines a compact 39.5-millimeter case with the automatic caliber 6R55, 72 hours of power reserve, and a functional countdown rotating bezel. This makes it an interesting choice for men who want to combine sporty design, mechanical technology, and high everyday usability.