Side by side

Seestern MoonPhase Master Automatic S401.ZTvsSwatch Waktu51

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Add a watch
MoonPhase Master Automatic S401.ZT
SeesternMoonPhase Master Automatic S401.ZT
MSRP $200
See the full MoonPhase Master Automatic S401.ZT
Waktu51
SwatchWaktu51
MSRP $170
See the full Waktu51
Buy from Seestern ↗
Buy used on eBay ↗
Buy from Swatch ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

14 of 29 specs differ
Diameter
MoonPhase Master Automatic S401.ZT41mm
Waktu5142mm
Power Reserve
MoonPhase Master Automatic S401.ZT—
Waktu51—
Water Resistance
MoonPhase Master Automatic S401.ZT50m
Waktu5130m
MSRP
MoonPhase Master Automatic S401.ZT$200
Waktu51$170

Full specifications

Case

8 specs
Category
—
Mechanical
Diameter
41mm
42mm
Thickness
13.5mm
13.9mm
Lug-to-Lug
0mm
50.6mm
Lug Width
0mm
—
Material
Stainless Steel
Bio-sourced Material
Finish
—
Bio-sourced material
Water Resistance
50m
30m

Crystal & Dial

2 specs
Crystal
Sapphire
—
Dial Color
—
Blue

Movement

3 specs
Caliber
Seagull ST2528
—
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$200
$170
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

AETHELSOHN Glacier Hydraulic Ice-Texture Dial Automatic Watch
AETHELSOHN

Glacier Hydraulic Ice-Texture Dial Automatic Watch

3 variantsSeries
40mm·Automatic·100m WR
$195MSRP
—Used
Swatch Am51
Swatch

Am51

Ref. SO30B400
42mm·Automatic
$170MSRP
—Used
AETHELSOHN Shard Fumé Dial Automatic
AETHELSOHN

Shard Fumé Dial Automatic

2 variantsSeries
40mm·Automatic·100m WR
$199MSRP
—Used
Orient Esteem II
Orient

Esteem II

41mm·Automatic
$285MSRP
—Used
Swatch Blurang
Swatch

Blurang

Ref. YIS430
42mm·Automatic
$260MSRP
—Used
Ibarra SALVADOR 40MM WORLD TIMER AUTOMATIC TWO-TONE DRESS WATCH
Ibarra

SALVADOR 40MM WORLD TIMER AUTOMATIC TWO-TONE DRESS WATCH

3 variantsSeries
40mm·Automatic
$331MSRP
—Used
Orient Helios
Orient

Helios

4 variantsHelios
40.5mm·Automatic
$335MSRP
—Used
Orient Star Avant-garde Skeleton
Orient Star

Avant-garde Skeleton

3 variantsContemporary
42.6mm·Automatic·100m WR
$765MSRP
—Used
All alternatives to the MoonPhase Master Automatic S401.ZT →All alternatives to the Waktu51 →
Explore the full catalog
DiscussionNot started
Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

ANGLES Watches The SaivsSwatch Waktu51Colomer & Sons Roma TempusvsSwatch Waktu51Ferro & Company AGL 2 AUTOMATIC BLACK /vsSwatch Waktu51Akrone C-03 ALAT GMTvsSwatch Waktu51Seestern MoonPhase Master Automatic S401.ZTvsStewart Dawson 911Seestern MoonPhase Master Automatic S401.ZTvsWolbrook Skindiver Automatic
Edit this comparisonAdd another watchExplore more 40–43mm watches