Side by side
Slow Watches Slow Round 40mmvsSeiko Astron
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
Slow Round 40mm42.5mm
Astron42mm
Power Reserve
Slow Round 40mm—
Astron40h
Water Resistance
Slow Round 40mm100m
Astron100m
MSRP
Slow Round 40mm—
Astron$2,500
Full specifications
Case
6 specsCategory
—
GMT
Diameter
42.5mm
42mm
Thickness
8.25mm
12.4mm
Lug-to-Lug
46mm
49.5mm
Lug Width
—
14mm
Material
Stainless Steel
Titanium
Crystal & Dial
3 specsAR Coating
Inner
Super-clear coating
Dial Color
—
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Ronda 515.24
5X83
Power Reserve
—
40h
Jewels
25
14
Pricing
1 specsMSRP
—
$2,500
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Slow Watches Slow Round 40mm vs Seiko Astron gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Slow Watches Slow Round-SvsSeiko AstronSlow Watches TwelvevsSeiko AstronSlow Watches Slow Mo 34mm GMT Mo — cushion/squared case, single-hand 24h, printed 24h numeralsvsSeiko AstronGhostTown Old WestvsSeiko AstronFarer Segrave IIIvsSlow Watches Slow Round 40mmHelgray Skyfighter (Refurbished)vsSlow Watches Slow Round 40mm