Seiko Prospex SPB143 vs Longines HydroConquest 41
Head-to-head comparison · Community ratings · Pricing
Quick Verdict
Seiko Prospex SPB143 is the value winner at $700–$900 — over 50% cheaper than the Longines HydroConquest 41 ($1k–$2k). Choose Longines HydroConquest 41 (300m WR) for diving; Seiko Prospex SPB143 (200m) suits everyday wear.
Specifications Compared
Frequently Asked Questions
Which is better: Seiko Prospex SPB143 or Longines HydroConquest 41?▼
Both are excellent watches with different strengths. The Seiko Prospex SPB143 offers a more compact size and costs less new. The Longines HydroConquest 41 excels in water resistance. The best choice depends on your wrist size, budget, and preferred aesthetic.
What's the price difference?▼
The Seiko Prospex SPB143 retails for $700–$900, while the Longines HydroConquest 41 is priced at $1k–$2k. Pre-owned, expect $550–$750 and $900–$1k respectively. Actual secondary market prices vary based on condition and demand.
How do the case sizes compare?▼
The Seiko Prospex SPB143 has a 40.5mm case diameter with 13.2mm thickness, while the Longines HydroConquest 41 measures 41mm × 12mm. Both have lug-to-lug measurements of 48mm and 49mm respectively. Consider your wrist size and wear style when deciding.
Which has better water resistance?▼
The Seiko Prospex SPB143 is water-resistant to 200m, while the Longines HydroConquest 41 offers 300m. Both are suitable for swimming and snorkeling at their respective depths. For professional diving, verify the rating exceeds 300m and includes a screw-down crown.
How do the movements compare?▼
The Seiko Prospex SPB143 uses a automatic 6R35 with 70 hours power reserve. The Longines HydroConquest 41 features a automatic L888.4 with 72 hours power reserve. Both offer traditional mechanical craftsmanship.
Which holds value better?▼
Seiko and Longines both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $550–$750 for the Prospex SPB143 and $900–$1k for the HydroConquest 41. Condition, service history, and box/papers significantly impact resale value for both models.