Side by side

Jack Mason Strat-o-timer GMTvsGruppo Gamma Peacemaker Bronze Manual

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

Strat-o-timer GMT
Jack MasonStrat-o-timer GMT
MSRP $1,149
Peacemaker Bronze Manual
Gruppo GammaPeacemaker Bronze Manual
MSRP $1,120
What people say

Owners + reviewers, side by side

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

Jack Mason Strat-o-timer GMT

Owners and reviewers widely praise the Jack Mason Strat-o-timer GMT for its exceptional value and traveler GMT functionality powered by the Miyota 9075 movement. Specific strengths highlighted include impressive fit and finish, screw-in bracelet pins, on-the-fly adjustment, sapphire crystal front and back, a screw-down crown, and a lumed bezel. The 7-link bracelet, with its micro-adjust buckle offering 9 points of adjustment, is frequently cited as a standout feature, with some owners comparing it favorably to much more expensive watches. Some reviewers note "chubby" hour markers and a potentially plastic bezel insert, though others state it is sapphire. The watch is praised for its comfortable 42mm case and vintage aesthetic. Overall, owners rate the Jack Mason Strat-o-timer GMT highly for its outstanding value and well-executed traveler GMT complication.

Gruppo Gamma Peacemaker Bronze Manual

Owners praise the Gruppo Gamma Peacemaker Bronze Manual for its character, with specific mentions of the dégradé green sandwich dial, matte black sandwich dial, and box-shaped sapphire crystal. The hand-wound ETA 6497-1 movement is described as a "dream" to wind, and one owner notes the Miyota 8N33 movement keeps outstanding time. The watch offers 200m water resistance and comes on a rubber or custom rally strap. Accuracy figures range from outstanding to +/-12 seconds per day with Sellita SW219-1 or ETA 6497-1 movements. On balance, owners rate the Gruppo Gamma Peacemaker Bronze Manual highly for its unique dial designs and the satisfying winding experience of its manual-wind movements.

At a glance

13 of 29 specs differ
Diameter
Strat-o-timer GMT42mm
Peacemaker Bronze Manual43mm
Power Reserve
Strat-o-timer GMT40h
Peacemaker Bronze Manual45h
Water Resistance
Strat-o-timer GMT200m
Peacemaker Bronze Manual200m
MSRP
Strat-o-timer GMT$1,149
Peacemaker Bronze Manual$1,120

Full specifications

Case

6 specs
Category
Diver
Diameter
42mm
43mm
Thickness
13.2mm
13mm
Lug-to-Lug
49mm
52.5mm
Lug Width
22mm
24mm
Material
316L Stainless Steel
Bronze

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Fume Green
Lume
None
Super-LumiNova

Movement

3 specs
Caliber
Miyota 9075
Sellita SW219-1
Type
Automatic
Manual
Power Reserve
40h
45h

Pricing

1 specs
MSRP
$1,149
$1,120
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