Which is cheaper, the Lum-Tec B68 Day Date or the Seiko Astron GPS Solar 2025 Limited Edition?

At MSRP the Lum-Tec B68 Day Date is the cheaper of the two at $595, against $2,600 for the Seiko Astron GPS Solar 2025 Limited Edition — a $2,005 gap before any retailer discounting.

Which is bigger, the Lum-Tec B68 Day Date or the Seiko Astron GPS Solar 2025 Limited Edition?

The Lum-Tec B68 Day Date wears larger at 44mm versus 42mm for the Seiko Astron GPS Solar 2025 Limited Edition — a 2mm difference across the dial.

Which has better water resistance, the Lum-Tec B68 Day Date or the Seiko Astron GPS Solar 2025 Limited Edition?

The Lum-Tec B68 Day Date is rated to 200m versus 10m for the Seiko Astron GPS Solar 2025 Limited Edition.

What movement does the Lum-Tec B68 Day Date run compared to the Seiko Astron GPS Solar 2025 Limited Edition?

Both watches run quartz movements — the Lum-Tec B68 Day Date uses the Ronda 515 and the Seiko Astron GPS Solar 2025 Limited Edition uses the 3X62.

Side by side

Lum-Tec B68 Day DatevsSeiko Astron GPS Solar 2025 Limited Edition

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

Lum-Tec B68 Day Date

combat-b68

MSRP $595

Seiko Astron GPS Solar 2025 Limited Edition

ssj029j1

MSRP $2,600

At a glance

14 of 29 specs differ

Diameter

B68 Day Date44mm

Astron GPS Solar 2025 Limited Edition42mm

Power Reserve

B68 Day Date40h

Astron GPS Solar 2025 Limited Edition40h

Water Resistance

B68 Day Date200m

Astron GPS Solar 2025 Limited Edition100m

MSRP

B68 Day Date$595

Astron GPS Solar 2025 Limited Edition$2,600

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

Inner

Super-clear coating

Dial Color

B68 Day Date

Black

Lume

None

LumiBrite on hands and index(es)

Movement

2 specs

Caliber

Ronda 515

3X62

Jewels

Pricing

1 specs

MSRP

$595

$2,600

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