Which is cheaper, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

At MSRP the Hemel HD24 Automatic is the cheaper of the two at $300, against $2,800 for the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch — a $2,500 gap before any retailer discounting.

Which is bigger, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

The Hemel HD24 Automatic wears larger at 40mm versus 39.5mm for the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch — a 0.5mm difference across the dial.

Which has a longer power reserve, the Hemel HD24 Automatic or the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

The Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch carries a 45-hour power reserve against 40 hours on the Hemel HD24 Automatic.

What movement does the Hemel HD24 Automatic run compared to the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch?

Both watches run automatic movements — the Hemel HD24 Automatic uses the Seiko NH38A and the Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch uses the 6L37.

Side by side

Hemel HD24 AutomaticvsSeiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

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

Hemel HD24 Automatic

the-gallant

MSRP $300

Seiko Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch

sje117j1

MSRP $2,800

At a glance

13 of 29 specs differ

Diameter

HD24 Automatic40mm

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch39.5mm

Power Reserve

HD24 Automatic40h

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch45h

Water Resistance

HD24 Automatic200m

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch200m

MSRP

HD24 Automatic$300

Prospex Marinemaster Marinemaster 1965 Heritage Diver's Watch$2,800

Full specifications

Case

4 specs

Diameter

40mm

39.5mm

Thickness

13mm

12.3mm

Lug-to-Lug

48mm

47.2mm

Material

316L Stainless Steel

Stainless Steel

Crystal & Dial

5 specs

Crystal

Domed Sapphire

Sapphire

Crystal Shape

Flat

Box

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Gallant USAF Edition

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH38A

6L37

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$300

$2,800

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