Hemel HFT20vsSeiko Astron GPS Solar 2025 Limited Edition

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Hemel HFT20 at true scale

HFT20

Seiko Astron GPS Solar 2025 Limited Edition at true scale

Astron GPS Solar 2025 Limited Edition

Diameter

42mm

43.4mm

Lug-to-Lug

49mm

lowest

49.5mm

Thickness

n/a

13.4mm

Water Resistance

100m

100m

MSRP

$450

lowest

$2,900

Movement

Seiko VK64

Seiko 5X83

Case

5 specs
Diameter
42mm
43.4mm
Thickness
n/a
13.4mm
Lug-to-Lug
49mm
49.5mm
Lug Width
20mm
14mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Super-clear coating
Dial Color
Black
n/a
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko VK64
Seiko 5X83
Type
Meca-Quartz
Quartz
Jewels
0
14

Pricing

1 specs
MSRP
$450
$2,900
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hemel HFT20

The Hemel HFT20 is praised for its engaging chronograph sweep and convenient grab-and-go wearability, with reviewers noting its legible matte black dial and sapphire crystal. Owners found the watch sweet at its $270 pre-order price, and the 42mm case wears well due to its 49mm lug-to-lug distance. The included leather strap is comfortable and well-made. One reviewer noted the chronograph minutes sub-dial does not precisely jump, and the 16mm thickness is slightly more than ideal for the Seiko VK64 meca-quartz movement. Overall, owners and reviewers rate the Hemel HFT20 highly for its accessible take on vintage designs and enjoyable chronograph function at its price point.

Seiko Astron GPS Solar 2025 Limited Edition

Owners praise the Seiko Astron GPS Solar 2025 Limited Edition for its advanced satellite timekeeping and perpetual calendar, with a legible dial and high-quality titanium or steel case featuring a ceramic bezel. However, its size is noted as enormous, with some finding it wears large and doesn't fit well under shirt sleeves, though the technology is considered very cool. GPS signal reception requires a clear view of the sky, which can be an issue indoors. On balance, owners and reviewers rate the Seiko Astron GPS Solar 2025 Limited Edition highly for its cutting-edge satellite timekeeping technology.