Side by side

Ferro Time Master 70vsSternglas Naos Großdatum

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

Time Master 70
FerroTime Master 70
MSRP $685
Naos Großdatum
SternglasNaos Großdatum
MSRP $323

At a glance

12 of 29 specs differ
Diameter
Time Master 7047mm
Naos Großdatum38mm
Power Reserve
Time Master 7040h
Naos Großdatum
Water Resistance
Time Master 7050m
Naos Großdatum50m
MSRP
Time Master 70$685
Naos Großdatum$323

Full specifications

Case

5 specs
Category
Chronograph
Dress
Diameter
47mm
38mm
Thickness
13mm
10mm
Lug-to-Lug
47mm
42mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
Dial Color
Gold
Lume
None
Luminova Punkten

Movement

4 specs
Caliber
Miyota 9039
Seiko VJ76
Type
Automatic
Quartz
Power Reserve
40h
Jewels
25

Pricing

1 specs
MSRP
$685
$323

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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.

Ferro Time Master 70

The Ferro Time Master 70 is praised for its distinctive 1970s-inspired polygon case and visually striking silver dial with orange accents and unique lume colors. Owners appreciate the retro design with unique touches, clean dial, and lumed markers, along with the smooth winding of the Miyota 9039 movement. Its 39mm diameter, 10.4mm thickness, and 47mm lug-to-lug dimensions contribute to comfortable wearability, further enhanced by a well-executed faux-single link bracelet featuring a practical on-the-fly micro-adjustment clasp. On balance, owners and reviewers rate the Ferro Time Master 70 highly for its retro design and comfortable wearability.

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.

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