Full Breakdown
Seiko Unveils Four New Prospex Speedtimer Models
9/1/2026, 8:03:23 PM
New Additions to the Speedtimer Line
Seiko announced four new Prospex Speedtimer watches: two mechanical chronographs (references HBD001 and HBD002) and two time-only three-hand models (references HBC003 and HBC004). The models join the permanent collection as part of Seiko’s 145th-anniversary celebrations.
Historical Context of the Speedtimer Name
The “Speedtimer” name dates to Seiko’s 1969 automatic chronographs, notably the calibre 6139-driven Speedtimer that placed Seiko among the first three manufacturers with an automatic chronograph. After reviving the line in 2021, the collection expanded to include various chronograph and three-hand variants.
Model Overviews and Technical Details
| Reference | Type | Case | Water-resistance | Movement | Power reserve | Price (EUR) |
|---|---|---|---|---|---|---|
| HBD001 | Mechanical chronograph | 42 mm × 14.6 mm stainless steel, super-hard coating, sapphire crystal, solid steel back | 100 m | In-house Calibre 8R48 (automatic, column-wheel, vertical clutch, 34 jewels, 28,800 vph) | 45 h | €2,780 |
| HBD002 | Mechanical chronograph | Same case as HBD001, grey leather strap | 100 m | Calibre 8R48 (identical) | 45 h | €2,680 |
| HBC003 | Time-only three-hand | 39.5 mm × 12 mm stainless steel, inner rotating bezel, sapphire crystal, solid steel back | 200 m | In-house Calibre 6R55 (automatic, 21,600 vph, 24 jewels) | 72 h | €1,030 |
| HBC004 | Time-only three-hand | Same case as HBC003, embossed leather strap | 200 m | Calibre 6R55 (identical) | 72 h | €1,000 |
Both chronographs feature a vertical clutch and column wheel; the 8R48 runs at 4 Hz. The time-only models use the 6R55 at 3 Hz with a magnetic resistance of 4,800 A/m. HBD001 ships with a nine-row steel bracelet and push-button clasp; HBD002 comes on a light-gray leather strap. HBC003 has a light-blue dial and steel bracelet, while HBC004 offers a brushed-gray dial with a leather-lined nylon strap.
Brand Positioning and Availability
Seiko presents the launch as a continuation of the Speedtimer’s motorsport-inspired heritage, highlighting the new colour palette and modern movement technology. The watches are available for immediate purchase, with chronographs priced around €2,600–€2,800 and three-hand models near €1,000.
Conflicting Model Designations
Monochrome-watches lists the time-only references as HBC003 and HBC004, whereas FratelloWatches uses HDC003 and HDC004. Specifications and pricing are identical, indicating a typographical discrepancy.
Impact on the Seiko Catalog
The new dial colours and strap options broaden the Speedtimer aesthetic, giving consumers chronograph and three-hand choices within a single family. By pairing historic design cues with contemporary in-house movements, Seiko reinforces the Prospex sub-brand’s appeal to both collectors and everyday sport-watch wearers.
