Side by side
Casio EFS-S650DvsHemel HFC Mechanical Chronograph
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
EFS-S650D40.9mm
HFC Mechanical Chronograph40mm
Power Reserve
EFS-S650D—
HFC Mechanical Chronograph—
Water Resistance
EFS-S650D100m
HFC Mechanical Chronograph100m
MSRP
EFS-S650D$250
HFC Mechanical Chronograph$550
Full specifications
Case
6 specsDiameter
40.9mm
40mm
Thickness
11.7mm
13.4mm
Lug-to-Lug
46.7mm
47mm
Lug Width
—
20mm
Material
Stainless Steel
316L Stainless Steel
Finish
—
—
Crystal & Dial
3 specsCrystal
Sapphire
Domed Sapphire
AR Coating
Yes
—
Dial Color
Black
Airfoil (1970s British Pilot)
Movement
3 specsCaliber
—
Sea-Gull ST19
Type
Quartz
Manual
Power Reserve
—
0h
Pricing
1 specsMSRP
$250
$550
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