Halios SeaforthvsSeiko Prospex SBDC101

Both are excellent watches with different strengths. The Halios Seaforth offers a more compact size and costs more new. The Seiko Prospex SBDC101 excels in overall construction. The best choice depends on your wrist size, budget, and preferred aesthetic.

The Halios Seaforth retails for $850–$1k, while the Seiko Prospex SBDC101 is priced at $650–$800. Pre-owned, expect $700–$900 and $500–$700 respectively. Actual secondary market prices vary based on condition and demand.

The Halios Seaforth has a 38mm case diameter with 11.5mm thickness, while the Seiko Prospex SBDC101 measures 40.5mm × 13.2mm. Both have lug-to-lug measurements of 46mm and 48mm respectively. Consider your wrist size and wear style when deciding.

The Halios Seaforth is water-resistant to 300m, while the Seiko Prospex SBDC101 offers 200m. 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.

The Halios Seaforth uses a automatic SW200 with 38 hours power reserve. The Seiko Prospex SBDC101 features a automatic 6R35 with 70 hours power reserve. Both offer traditional mechanical craftsmanship.

Halios and Seiko both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $700–$900 for the Seaforth and $500–$700 for the Prospex SBDC101. Condition, service history, and box/papers significantly impact resale value for both models.