loader image

A mechanical SPEEDTIMER model featuring a countdown timer

By operating the 4 o’clock crown, a countdown timer function can be used to measure anything from the intervals of a motorsports race to moments from daily life.

The orange accent that appears on the dial ring is also used for the seconds hand to enhance legibility during instantaneous measurements.

The dial color also enhances legibility while evoking the spirit of classic cars.

SPECIFICATIONS

MOVEMENT

Caliber Number

6R55

Movement Type

Automatic with manual winding

Precision

+25 to -15 seconds per day

Power reserve

Approx. 72 hours(3 days)

Jewels

24

Functions

Stop second hand function

OTHER DETAILS

Water Resistance

20 bar

Magnetic Resistance

4,800 A/m

Features

Inner rotating ring with countdown scale
Screw case back

CASE/BAND

Case Material

Stainless steel (super hard coating)

Case Size

Thickness: 12.0mm
Diameter: 39.5mm
Lug-to-lug: 44.5mm

Crystal

Curved sapphire crystal

Crystal Coating

Anti-reflective coating on inner surface

LumiBrite

LumiBrite on hands and index(es)

Clasp

Three-fold clasp with push button release

Distance between lugs

20

HBC003- MSRP $995

HBC004 - MSRP $950

STORE LOCATOR

DISCOVER SEIKO WATCHES IN PERSON AT AN AUTHORIZED RETAILER NEAR YOU.