Side by side

Sternglas Naos GroßdatumvsTimefactors Speedbird GMT

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

Naos Großdatum
SternglasNaos Großdatum
MSRP $323
What people say

Owners + reviewers, side by side

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

Sternglas Naos Großdatum

The Sternglas Naos Großdatum is praised for its Bauhaus aesthetic and value, with one owner finding it an affordable alternative to other designs. However, some owners report it feels underwhelming and cheap, with a printed-on face, small font, and toy-like hands, and find the strap to be of poor quality. The watch features a 38mm stainless steel case, an Alabaster dial with beige LumiNova, and a Seiko TMI VJ76 quartz movement rated for -20/+20 seconds per month. On balance, owners and reviewers are divided, with the primary point of contention being the perceived quality and aesthetic execution of the Sternglas Naos Großdatum.

Timefactors Speedbird GMT

Owners widely praise the Timefactors Speedbird GMT for its quality and value, with many appreciating its 36mm case size for wearability and its surprisingly good bracelet. Some owners note the GMT function is on an inner ring, and one owner found the date wheel sunken. The watch is noted for its classic aesthetic and is considered a good value, though purchasing requires patience due to limited order windows. Overall, owners rate the Timefactors Speedbird GMT highly for its wearability and value at the price point.

At a glance

11 of 29 specs differ
Diameter
Naos Großdatum38mm
Speedbird GMT36mm
Power Reserve
Naos Großdatum
Speedbird GMT
Water Resistance
Naos Großdatum50m
Speedbird GMT100m
MSRP
Naos Großdatum$323
Speedbird GMT$315

Full specifications

Case

6 specs
Category
Dress
Diameter
38mm
36mm
Thickness
10mm
11.6mm
Lug-to-Lug
42mm
42.5mm
Lug Width
20mm
18mm
Water Resistance
50m
100m

Crystal & Dial

2 specs
Dial Color
Black
Lume
Luminova Punkten
Super Luminova X1 C3

Movement

2 specs
Caliber
Seiko VJ76
Ronda 515
Jewels
25

Pricing

1 specs
MSRP
$323
$315
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