
IWC
Portugieser Automatic
Ref. IW358303
New Price
$7k–$8k
Pre-owned: $6k–$7k
Comparing the IWC Portugieser Automatic ($7k–$8k, 30m WR, 40mm) against the Omega Aqua Terra 38 ($5k–$6k, 150m WR, 38mm) — specs, movement, community votes, and an expert verdict below. The Omega Aqua Terra 38 is the more affordable option by $2k.
Our Verdict
Too Close to Call
Both the IWC Portugieser Automatic and Omega Aqua Terra 38 are excellent choices — the winner depends on your priorities, budget, and style preference.
Complete head-to-head comparison

IWC
Ref. IW358303
New Price
$7k–$8k
Pre-owned: $6k–$7k

Omega
Ref. 220.10.38.20.03.001
New Price
$5k–$6k
Pre-owned: $4k–$5k
Explore Brand
All Omega watches, comparisons, and guides in one place
Visit Omega Pillar Page →Both sit in a similar price range: IWC Portugieser Automatic at $7k–$8k vs Omega Aqua Terra 38 at $5k–$6k — choose based on use case and style preference. Omega Aqua Terra 38 edges ahead on water resistance: 150m vs 30m. Case size: IWC Portugieser Automatic at 40mm suits larger wrists; Omega Aqua Terra 38 at 38mm is the more compact option.
Pros
Cons
Pros
Both are excellent watches with different strengths. The IWC Portugieser Automatic offers a larger case and costs more new. The Omega Aqua Terra 38 excels in water resistance. The best choice depends on your wrist size, budget, and preferred aesthetic.
The IWC Portugieser Automatic retails for $7k–$8k, while the Omega Aqua Terra 38 is priced at $5k–$6k. Pre-owned, expect $6k–$7k and $4k–$5k respectively. Actual secondary market prices vary based on condition and demand.
The IWC Portugieser Automatic has a 40mm case diameter with 10.8mm thickness, while the Omega Aqua Terra 38 measures 38mm × 11.1mm. Both have lug-to-lug measurements of 47mm and 45mm respectively. Consider your wrist size and wear style when deciding.
The IWC Portugieser Automatic is water-resistant to 30m, while the Omega Aqua Terra 38 offers 150m. 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 IWC Portugieser Automatic uses a automatic Cal. 82100 with 60 hours power reserve. The Omega Aqua Terra 38 features a automatic Cal. 8900 with 55 hours power reserve. Both offer traditional mechanical craftsmanship.
IWC and Omega both command strong secondary markets. Pre-owned pricing shows an estimated resale value of $6k–$7k for the Portugieser Automatic and $4k–$5k for the Aqua Terra 38. Condition, service history, and box/papers significantly impact resale value for both models.
The most recognised watch brand on Earth, producing roughly 1 million watches annually — all in-house.
Explore Brand →
Rolex's sister brand, delivering in-house movements at 30–60% lower retail prices than its parent.
Explore Brand →
Motorsport's official timekeeper for over 50 years — TAG Heuer has timed Formula 1, Le Mans, and the Monaco Grand Prix.
Explore Brand →
Invented the quartz movement (1969), the kinetic movement (1988), and the spring drive (1999) — more watch innovations than any other single company.
Explore Brand →
Other watches worth considering in this category
Other popular comparisons featuring IWC or Omega
COMPARISON
IWC Portugieser Automatic
vs
Longines Master Collection
Price Range
IWC
$7k–$8k
Longines
$2k–$2k
Compare Now →
COMPARISON
IWC Portugieser 40
vs
Omega Aqua Terra 38
Price Range
IWC
$7k–$8k
Omega
$5k–$6k
Compare Now →
COMPARISON
Longines Master Collection 40
vs
Omega Aqua Terra 38
Price Range
Longines
$2k–$2k
Omega
$5k–$6k
Compare Now →
COMPARISON
Grand Seiko SBGA211 Snowflake
vs
Omega Aqua Terra 38
Price Range
Grand Seiko
$6k–$6k
Omega
$5k–$6k
Compare Now →