Side by side

Timefactors SMITHS NATO PRS-40 AUTOMATICvsGruppo Gamma Field III GMT Date

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

What people say

Owners + reviewers, side by side

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

Timefactors SMITHS NATO PRS-40 AUTOMATIC

Owners widely praise the Timefactors SMITHS NATO PRS-40 AUTOMATIC for its unique, "badass," rugged, and futuristic design, with some finding its "ugly" aesthetic appealing for its bombproof nature. The Seiko 6R15 movement winds smoothly and operates quietly, and the watch features 100m water resistance and a flat sapphire crystal. The 12 o'clock crown is noted as easy to use by rolling, and the fixed lugs necessitate NATO straps. Some owners report issues with Timefactors' ordering system and customer service, and one found a speck of dust under the crystal, though another noted no imperfections. Overall, owners rate the Timefactors SMITHS NATO PRS-40 AUTOMATIC highly for its distinctive "beater" watch build and unique aesthetic at the price.

Gruppo Gamma Field III GMT Date

Owners widely praise the Gruppo Gamma Field III GMT Date for its awesome looks, quality, and good value. The watch features a 40mm brushed 316L stainless steel case, box sapphire crystal, and 200m water resistance, powered by a Seiko NH34A movement. Some reviewers note the NH34A movement's accuracy can range from -20~+40 seconds per day, though one reviewer reported +5 seconds per day with a regulated movement. The dial's dense layout with Arabic numerals can be overwhelming for some, and one owner found the size unsuitable for smaller wrists. On balance, owners rate the Gruppo Gamma Field III GMT Date highly for its impressive finishing and toolish design at its price point.

At a glance

13 of 29 specs differ
Diameter
SMITHS NATO PRS-40 AUTOMATIC40.2mm
Field III GMT Date40mm
Power Reserve
SMITHS NATO PRS-40 AUTOMATIC50h
Field III GMT Date41h
Water Resistance
SMITHS NATO PRS-40 AUTOMATIC100m
Field III GMT Date200m
MSRP
SMITHS NATO PRS-40 AUTOMATIC$315
Field III GMT Date$459

Full specifications

Case

6 specs
Category
GMT
Diameter
40.2mm
40mm
Thickness
12.25mm
14mm
Lug-to-Lug
54.7mm
48.5mm
Lug Width
22mm
22mm
Water Resistance
100m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
6R15
Seiko Instruments NH38A
Power Reserve
50h
41h
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$315
$459
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