Which is cheaper, the Hemel HFC Mechanical Chronograph or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

At MSRP the Hemel HFC Mechanical Chronograph is the cheaper of the two at $550, against $1,250 for the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition — a $700 gap before any retailer discounting.

Which is bigger, the Hemel HFC Mechanical Chronograph or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition wears larger at 40.5mm versus 40mm for the Hemel HFC Mechanical Chronograph — a 0.5mm difference across the dial.

Which has better water resistance, the Hemel HFC Mechanical Chronograph or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition is rated to 200m versus 100m for the Hemel HFC Mechanical Chronograph.

Which has a longer power reserve, the Hemel HFC Mechanical Chronograph or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition carries a 70-hour power reserve against 40 hours on the Hemel HFC Mechanical Chronograph.

What movement does the Hemel HFC Mechanical Chronograph run compared to the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Hemel HFC Mechanical Chronograph runs a manual caliber (Seagull ST19), while the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition runs a automatic (6R35).

Side by side

Hemel HFC Mechanical ChronographvsSeiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Hemel HFC Mechanical Chronograph

the-airfoil

MSRP $550

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

spb297j1

MSRP $1,250

At a glance

16 of 29 specs differ

Diameter

HFC Mechanical Chronograph40mm

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm

Power Reserve

HFC Mechanical Chronograph40h

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h

Water Resistance

HFC Mechanical Chronograph100m

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m

MSRP

HFC Mechanical Chronograph$550

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250

Full specifications

Case

6 specs

Crystal & Dial

5 specs

Crystal

Domed Sapphire

Sapphire

Crystal Shape

Flat

Curved

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 specs

Caliber

Seagull ST19

6R35

Type

Manual

Automatic

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$550

$1,250

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