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HBC004J1
HBC004J1
New Men's

HBC004

Prospex
SPEEDTIMER
September 2026 Release
Variations

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 embossed leather strap evokes the spirit of classic cars.
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

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)
Band Material
Cow leather
Clasp
Three-fold clasp with push button release
Distance between lugs
20

Other Details

Water Resistance
20 bar
Magnetic Resistance
4,800 A/m
Features
  • Inner rotating ring with countdown scale
  • Screw case back