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 Edition42mm
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$2,600
Full specifications
Case
7 specsCategory
Chronograph
GMT
Diameter
43mm
42mm
Thickness
14mm
12mm
Lug-to-Lug
49mm
47.9mm
Lug Width
20mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
100m
Crystal & Dial
3 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Seagull ST19
3X62
Type
Manual
Quartz
Jewels
25
10
Pricing
1 specsMSRP
$550
$2,600
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