Side by side
Hemel HFC Mechanical ChronographvsSeiko Prospex Sea
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
16 of 29 specs differDiameter
HFC Mechanical Chronograph40mm
Prospex Sea43.8mm
Power Reserve
HFC Mechanical Chronograph40h
Prospex Sea41h
Water Resistance
HFC Mechanical Chronograph100m
Prospex Sea200m
MSRP
HFC Mechanical Chronograph$550
Prospex Sea$625
Full specifications
Case
7 specsCategory
Chronograph
Diver
Diameter
40mm
43.8mm
Thickness
13.4mm
12.8mm
Lug-to-Lug
47mm
48.7mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
200m
Crystal & Dial
4 specsCrystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Airfoil (1970s British Pilot)
Black
Lume
None
LumiBrite on hands, index(es) and bezel
Movement
4 specsCaliber
Seagull ST19
4R35
Type
Manual
Automatic
Power Reserve
40h
41h
Jewels
25
23
Pricing
1 specsMSRP
$550
$625
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