Which is cheaper, the Maen Skymaster 38 MKIII or the Grand Seiko SBGP009?

At MSRP the Maen Skymaster 38 MKIII is the cheaper of the two at $1,679, against $3,100 for the Grand Seiko SBGP009 — a $1,421 gap before any retailer discounting.

Which is bigger, the Maen Skymaster 38 MKIII or the Grand Seiko SBGP009?

The Grand Seiko SBGP009 wears larger at 40mm versus 38mm for the Maen Skymaster 38 MKIII — a 2mm difference across the dial.

What movement does the Maen Skymaster 38 MKIII run compared to the Grand Seiko SBGP009?

The Maen Skymaster 38 MKIII runs a automatic caliber (Sellita SW510mb), while the Grand Seiko SBGP009 runs a quartz (9F85).

Side by side

Maen Skymaster 38 MKIIIvsGrand Seiko SBGP009

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

Maen Skymaster 38 MKIII

skymaster-38-m6-1-1

MSRP $1,679

Grand Seiko SBGP009

sbgp009g

MSRP $3,100

At a glance

12 of 29 specs differ

Diameter

Skymaster 38 MKIII38mm

SBGP00940mm

Power Reserve

Skymaster 38 MKIII40h

SBGP00940h

Water Resistance

Skymaster 38 MKIII100m

SBGP009100m

MSRP

Skymaster 38 MKIII$1,679

SBGP009$3,100

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

Inner

Yes

Dial Color

M6.1.1

Black

Movement

2 specs

Caliber

Sellita SW510mb

9F85

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$1,679

$3,100

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What people say

Owners + reviewers, side by side

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

Maen Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

Grand Seiko SBGP009 owners note its "normal quartz" movement, and one owner criticizes the bracelet for lacking a taper. One owner cites a 40-year-old Seiko quartz watch that has only required battery changes as evidence of the reliability of Grand Seiko's quartz movements. On balance, owners value the Grand Seiko SBGP009 for its perceived long-term reliability.

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