Side by side

Longines PrimaLuna MoonphasevsSpinnaker Fleuss GMT

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

PrimaLuna Moonphase
LonginesPrimaLuna Moonphase
MSRP $2,950
Fleuss GMT
SpinnakerFleuss GMT
MSRP $299

At a glance

21 of 29 specs differ
Diameter
PrimaLuna Moonphase34mm
Fleuss GMT43mm
Power Reserve
PrimaLuna Moonphase72h
Fleuss GMT40h
Water Resistance
PrimaLuna Moonphase30m
Fleuss GMT150m
MSRP
PrimaLuna Moonphase$2,950
Fleuss GMT$299

Full specifications

Case

9 specs
Category
Moonphase
GMT
Diameter
34mm
43mm
Thickness
11.6mm
13mm
Lug-to-Lug
41mm
51mm
Lug Width
8mm
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
30m
150m
Caseback
Transparent case back with sapphire crystal
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Both sides
Inner
Indices
Diamond indexes
Applied
Lume
Super-LumiNova
None

Movement

7 specs
Caliber
L899.5
Seiko NH34A
Beat Rate
25,200 vph
28,800 vph
Power Reserve
72h
40h
Jewels
0
25
Hacking
No
Yes
Hand-winding
No
Yes
Complications
Hours, minutes, seconds and date, Moon phase display at 6 o'clock
None

Pricing

1 specs
MSRP
$2,950
$299

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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.

Longines PrimaLuna Moonphase

The Longines PrimaLuna Moonphase features a fluid case design and a 72-hour power reserve from its automatic movement. Owners note its accuracy averages 1.3 seconds lost per day across six positions, and 3 to 4 seconds on the wrist, performing within COSC standards. Previously, moon phase models utilized quartz movements, a detail that may not appeal to mechanical watch enthusiasts. Overall, owners rate the Longines PrimaLuna Moonphase highly for its updated automatic movement and reliable timekeeping.

Spinnaker Fleuss GMT

Owners widely praise the Spinnaker Fleuss GMT for its aesthetic appeal, comfortable and light wearability, and value, especially when discounted. The textured blue dial, applied lumed markers, and sapphire crystal with AR coating are highlighted as stunning features. Owners also note the dial is very well lumed and the bracelet has helpful quick-release tabs. However, the 43.3mm case size is criticized by some as being too large, and the Beads of Rice bracelet is described as "jingly jangly" with a pressed clasp and a clasp that isn't finely finished. Some users flag the internal bezel rotates too easily. Overall, owners rate the Spinnaker Fleuss GMT highly for its aesthetic success and value at its affordable price point.

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