Which is cheaper, the Hemel HFC Mechanical Chronograph or the Seiko Astron GPS Solar 2025 Limited Edition?

At MSRP the Hemel HFC Mechanical Chronograph is the cheaper of the two at $550, against $2,600 for the Seiko Astron GPS Solar 2025 Limited Edition — a $2,050 gap before any retailer discounting.

Which is bigger, the Hemel HFC Mechanical Chronograph or the Seiko Astron GPS Solar 2025 Limited Edition?

The Seiko Astron GPS Solar 2025 Limited Edition wears larger at 42mm versus 40mm for the Hemel HFC Mechanical Chronograph — a 2mm difference across the dial.

Which has better water resistance, the Hemel HFC Mechanical Chronograph or the Seiko Astron GPS Solar 2025 Limited Edition?

The Hemel HFC Mechanical Chronograph is rated to 100m versus 10m for the Seiko Astron GPS Solar 2025 Limited Edition.

What movement does the Hemel HFC Mechanical Chronograph run compared to the Seiko Astron GPS Solar 2025 Limited Edition?

The Hemel HFC Mechanical Chronograph runs a manual caliber (Seagull ST19), while the Seiko Astron GPS Solar 2025 Limited Edition runs a quartz (3X62).

Side by side

Hemel HFC Mechanical ChronographvsSeiko Astron GPS Solar 2025 Limited 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 Astron GPS Solar 2025 Limited Edition

ssj029j1

MSRP $2,600

At a glance

14 of 29 specs differ

Diameter

HFC Mechanical Chronograph40mm

Astron GPS Solar 2025 Limited Edition42mm

Power Reserve

HFC Mechanical Chronograph40h

Astron GPS Solar 2025 Limited Edition40h

Water Resistance

HFC Mechanical Chronograph100m

Astron GPS Solar 2025 Limited Edition100m

MSRP

HFC Mechanical Chronograph$550

Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

Inner

Super-clear coating

Dial Color

Airfoil (1970s British Pilot)

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seagull ST19

3X62

Type

Manual

Quartz

Jewels

Pricing

1 specs

MSRP

$550

$2,600

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