Side by side
Hemel Sky Racer MechanicalvsSeiko Astron GPS Solar 2025 Limited Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Sky Racer Mechanical43mm
Astron GPS Solar 2025 Limited Edition43.4mm
Power Reserve
Sky Racer Mechanical40h
Astron GPS Solar 2025 Limited Edition40h
Water Resistance
Sky Racer Mechanical50m
Astron GPS Solar 2025 Limited Edition100m
MSRP
Sky Racer Mechanical$550
Astron GPS Solar 2025 Limited Edition$2,900
Full specifications
Case
6 specsDiameter
43mm
43.4mm
Thickness
14mm
13.4mm
Lug-to-Lug
49mm
49.5mm
Lug Width
20mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
100m
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Curved
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Seagull ST19
5X83
Type
Manual
Quartz
Jewels
25
14
Pricing
1 specsMSRP
$550
$2,900
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