Side by side

Ferro Time Master 70vsSternglas Naos Solar

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 Solar
SternglasNaos Solar
MSRP $323

At a glance

12 of 29 specs differ
Diameter
Time Master 7047mm
Naos Solar38mm
Power Reserve
Time Master 7040h
Naos Solar
Water Resistance
Time Master 7050m
Naos Solar50m
MSRP
Time Master 70$685
Naos Solar$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
Solar
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 Solar

Owners widely praise the Sternglas Naos Solar for its elegant Bauhaus-inspired minimalist dial, slim profile, and value for money. The scratch-resistant curved sapphire crystal and functional date mechanism are noted as durable features, with one owner reporting good wear over a year. The solar power and accuracy are highlighted as practical advantages over automatic movements, which some find loud. However, opinions are split, with some owners finding the watch underwhelming and cheap-looking, like a toy, while others love its appearance in person and its clean, appealing design as a smartwatch alternative. The stock leather strap is described as decent but basic and potentially short for larger wrists, with one owner advising a third-party replacement for durability. One owner of a different variant noted the date font is too small to be useful.

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