Side by side

Grand Seiko SBGX261vsLongines PRIMALUNA

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

SBGX261
Grand SeikoSBGX261
MSRP $2,700
PRIMALUNA
LonginesPRIMALUNA
MSRP $1,700

At a glance

19 of 29 specs differ
Diameter
SBGX26137mm
PRIMALUNA30mm
Power Reserve
SBGX26140h
PRIMALUNA40h
Water Resistance
SBGX261100m
PRIMALUNA30m
MSRP
SBGX261$2,700
PRIMALUNA$1,700

Full specifications

Case

7 specs
Diameter
37mm
30mm
Thickness
10mm
8mm
Lug-to-Lug
44.6mm
37mm
Lug Width
19mm
7mm
Finish
Brushed and polished
Water Resistance
100m
30m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Underside
Dial Color
Black
Mother of Pearl
Indices
Applied
Diamond indexes
Lume
None
Super-LumiNova

Movement

6 specs
Caliber
9F62
L152.3
Beat Rate
28,800 vph
25,200 vph
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$2,700
$1,700

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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.

Grand Seiko SBGX261

Owners widely praise the Grand Seiko SBGX261 for its exceptional finishing, rivaling mechanical watches, and the high-precision, hand-assembled 9F quartz movement, noted for its accuracy within 10 seconds per year. The 37mm case size and versatile design are frequently highlighted as key strengths, making it a comfortable and stylish everyday watch. However, the bracelet's lack of micro-adjustments and taper is a recurring criticism, and one owner notes the second hand's inconsistent alignment with markers. On balance, owners rate the Grand Seiko SBGX261 highly for its superb finishing and the technical prowess of its 9F quartz movement at its price point.

Longines PRIMALUNA

Owners widely praise the Longines PRIMALUNA for its attractive style and understated 26.5mm size, with the automatic version favored for its smooth sweep. The redesigned 34mm model features a fluid, polished case, available in steel or bi-metal, with dial options including mother-of-pearl. The automatic movement, Caliber L899, demonstrates consistent accuracy averaging a loss of 1.3 seconds per day across six positions and 3-4 seconds per day on the wrist, performing within COSC standards. The automatic movement offers a 72-hour power reserve. On balance, owners and reviewers highly regard the Longines PRIMALUNA for its blend of classic aesthetics and contemporary design updates, particularly appreciating the automatic movement's performance and the watch's overall stylish appeal.

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