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Seiko 5 Sports SKX GMT SSK003 vs Longines Conquest Automatic 41mm

The Seiko SSK003 is the better pick for a first automatic or a daily beater: a true GMT, 200 m water resistance, a bracelet with a solid clasp and a 36-month warranty, and owners rate it 4.9 out of 5. The Longines Conquest is the step up in finish and movement: sapphire crystal, a thinner 10.9 mm case, a see-through case back and the L888 with 72 hours of reserve. Neither is a chronograph despite the spec sheets; both are simple three-hand watches with a date.

  • Choose the Seiko SSK003 if you want a GMT function, tougher everyday water resistance and a watch you can wear hard without worrying about it.
  • Choose the Longines Conquest if you want a slimmer, dressier watch with sapphire crystal, a longer power reserve and a display back.

Prices

  • Seiko 5 Sports SKX GMT SSK003: $396.00 at Teddy Baldassarre (checked today)
  • Longines Conquest Automatic 41mm: $1,680.00 at WatchMaxx.com (last seen Nov 7)
  • Difference: the Seiko 5 Sports SKX GMT SSK003 is $1,284.00 cheaper than the Longines Conquest Automatic 41mm at the latest prices (Nov 7 and Nov 9)
Seiko
SSK003 5 Sports SKX GMT 42.5mm - Blue on Bracelet

Seiko 5 Sports SKX GMT SSK003

SSK003 5 Sports SKX GMT 42.5mm - Blue on Bracelet

4.9(182 ratings)
$396.00at Teddy BaldassarreVerified
See all prices and details
Visit Teddy Baldassarre
Pros
  • True GMT with a 24-hour bezel
  • 200 m water resistance
  • 36-month warranty
  • Wide 22 mm lug width for straps
  • Owners rate it 4.9 out of 5
Cons
  • Thick 13.6 mm case sits tall on the wrist
  • Hardlex scratches more easily than sapphire
  • Heavier at 161 g
  • Short 41-hour reserve
Longines
Longines Conquest

Longines Conquest Automatic 41mm

Longines Conquest

5(2 ratings)
$1,680.00at WatchMaxx.comObserved Nov 7, 2026, 6:42 PM
See all prices and details
Visit WatchMaxx.com
Pros
  • Slim 10.9 mm case slips under a cuff
  • 72-hour power reserve
  • Sapphire crystal resists scratches
  • See-through case back
  • Lighter at 113 g
Cons
  • No GMT hand
  • 100 m water resistance only
  • 21 mm lugs limit strap choices
  • 2-year warranty

What separates them

Seiko 5 Sports SKX GMT SSK003Longines Conquest Automatic 41mm
Movement and reserveSeiko 4R34 automatic, about 41 hours, 24 jewelsLongines L888 automatic, about 72 hours
GMT functionFourth hand tracks a second time zone on a 24-hour bezelThree-hand with date only
CrystalHardlex with magnifier lensesSapphire
Case size and thickness42.5 mm wide, 13.6 mm thick, 161 g41 mm wide, 10.9 mm thick, 113 g
Water resistance200 m (20 bar)100 m (10 bar)
Case backSolid steelSee-through, shows the movement
Lug width22 mm, easy to find straps21 mm, fewer strap options
Warranty36 months2 years

Price history

$1,752.00$368.56
Nov 2Nov 9
  • Seiko 5 Sports SKX GMT SSK003: lowest $368.56 on Nov 9 at Cicala.
  • Longines Conquest Automatic 41mm: lowest $1,650.00 on Nov 2 at WatchMaxx.com; $1,702.00 on Nov 9.

Prices at every store

Seiko 5 Sports SKX GMT SSK003

  • Teddy BaldassarreNew

    In stockReturn policy

    $396.00Verified
    Visit Teddy Baldassarre
  • Skaneateles JewelryNew

    In stock

    $399.00Free shippingObserved at 3:05 PM
    Visit Skaneateles Jewelry
  • CicalaNew

    Availability unknownShips from Italy · duties may apply

    $368.56Observed at 3:05 PM
    Visit Cicala
  • Fallers.comNew

    Availability unknown

    $404.00Observed at 3:05 PM
    Visit Fallers.com

Also available at

  • Bijoux EcloreCheck price at Bijoux Eclore
  • Deals GuruCheck price at Deals Guru
  • Gem BijouCheck price at Gem Bijou
All 8 stores and price history →

Longines Conquest Automatic 41mm

  • WatchMaxx.comNew

    In stock

    $1,680.00Observed Nov 7, 2026, 6:42 PM
    Visit WatchMaxx.com
  • Jomashop.comNew

    In stock

    $1,702.00Free shippingObserved at 3:04 PM
    Visit Jomashop.com
  • WatchmaxxNew

    In stock

    $1,752.00Free shippingObserved at 3:04 PM
    Visit Watchmaxx
  • JomashopNew

    In stock

    $1,752.00Free shippingObserved at 3:04 PM
    Visit Jomashop

Store links may earn us a commission. Some prices via Klarna.

All 21 stores and price history →

Specs compared

SpecSeiko 5 Sports SKX GMT SSK003Longines Conquest Automatic 41mm
Movement typeAutomatic with manual windingAutomatic
Power reserveApprox. 41 hours72 h
Case diameter42.5mm41 mm
Lug-to-lug46.0mm46.10 mm
CrystalHardlex with lensesSapphire crystal
Water resistance10 bar10 ATM
Weight161.0g113.0 g
StyleWristWrist
DisplayAnalogAnalog
ChronographYesYes
Water ResistantYesYes
Watch MovementMechanicalMechanical
Show all 39 specsShow fewer specs
SpecSeiko 5 Sports SKX GMT SSK003Longines Conquest Automatic 41mm
Mechanical MovementAutomaticAutomatic
Scratch-ResistantYesYes
Case ShapeRound CaseRound Case
Case Size42mm case41mm case
Caliber number4R34—
Jewels24—
Case thickness13.6mm—
Distance between lugs22—
Magnetic resistance4,800 A/m—
Movement

What reviewers say

Seiko 5 Sports SKX GMT SSK003

  • 4.9 / 5182 ratings

Owners rate it very highly, mostly for the GMT complication and SKX styling at the price. Common complaints are the thickness, the Hardlex crystal and so-so bracelet and timekeeping.

What people mention
  • GMT functionPraisedOwners like the independent 24-hour hand and bezel for tracking a second time zone.
  • Case sizeMixedThe 42.5mm case suits many wrists, but the 13.6mm thickness draws complaints.
  • CrystalCriticisedHardlex is seen as a weak point; some owners swap it for sapphire.
  • BraceletMixedThe steel bracelet is secure but described as basic and rattly by some.

Longines Conquest Automatic 41mm

Owners of the current Conquest generally rate it as a well-finished, versatile everyday automatic with a strong movement for the money. Common notes are the clean dial, the slim case and the long power reserve.

What people mention
  • MovementPraisedOwners like the L888's 72-hour reserve and steady timekeeping.
  • Case sizeMixedThe 41 mm case and 46.1 mm lug-to-lug suit many wrists but feel large on smaller ones.
  • BraceletMixedThe steel bracelet is solid and well finished, though some find it heavy and the clasp basic.
  • LegibilityPraisedThe blue dial with luminous stick markers reads clearly day or night.

Questions and answers

Which is better for travel across time zones?
The Seiko. Its GMT hand and 24-hour bezel let you read a second time zone at a glance. The Longines has no GMT function.
Which lasts longer?
Both are mechanical and need servicing every several years. The Longines has the better movement and sapphire crystal, so it holds up better over decades. The Seiko is cheaper to replace if damaged.
Is the Longines worth stepping up to?
Yes if you want a slimmer dress watch with sapphire and a display back. Stay with the Seiko if you need a GMT or swim with your watch.
Which wears smaller?
The Longines. It is 41 mm wide and 10.9 mm thick against 42.5 mm and 13.6 mm, and it weighs 113 g versus 161 g.
Can I swim with either?
The Seiko is rated to 200 m and is fine for swimming and snorkeling. The Longines is rated to 100 m, which covers swimming but not diving.
Do either have a chronograph?
No. Both are three-hand automatic watches with a date. Ignore any listing that says chronograph.

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Buying guides that pick them

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  • Best men's dress watches
—
Automatic
Caliber—L888
Frequency—25200 A/h
Thickness—10.9 mm
Lug width—21 mm
Case material—Steel
Color (Strap)—Silver
Closure—Clasp
Glass—Sapphire
Watch Strap Material—Stainless Steel
Functions—Date
Gender—Male
Case Color—Silver
Type of Index—Index (without numbers)
Display Type—Analog
Dial Color—Blue
Time Format—12 Hours
Water Protection—10 ATM (100m)