Side by side

Sinn 103 St Ty HdvsSeestern S446 GMT

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

103 St Ty Hd
Sinn103 St Ty Hd
MSRP $2,797
S446 GMT
SeesternS446 GMT
MSRP $299
What people say

Owners + reviewers, side by side

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

Sinn 103 St Ty Hd

The Sinn 103 St Ty Hd is widely praised as a stunning, heritage-inspired pilot's chronograph with a utilitarian feel and bold red accents on a black dial. Owners note it offers a different experience compared to typical Sinn watches. It features a hand-wound Sellita SW510 M movement, a 58-hour power reserve, 20 ATM water resistance, and impact-resistant acrylic glass. The Sinn 103 St Ty Hd is priced at €2,590 and is limited to 1,000 units. On balance, owners and reviewers rate the Sinn 103 St Ty Hd highly for its unique aesthetic and tool watch attributes.

From video reviewers

The watch's robustness and ability to withstand extreme conditions without compromising accuracy are notable strengths. The relatively high price point is a shared weakness. Reviewers disagree on the watch's thickness, with one reviewer considering it a drawback and the other not mentioning it.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

At a glance

18 of 29 specs differ
Diameter
103 St Ty Hd41mm
S446 GMT39.5mm
Power Reserve
103 St Ty Hd48h
S446 GMT41hh
Water Resistance
103 St Ty Hd200m
S446 GMT100m
MSRP
103 St Ty Hd$2,797
S446 GMT$299

Full specifications

Case

8 specs
Category
Tool
GMT
Diameter
41mm
39.5mm
Thickness
14.7mm
13mm
Lug-to-Lug
47mm
Material
stainless steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Domed
AR Coating
Inner
Dial Color
Black
Cream
Indices
Applied

Movement

5 specs
Caliber
ETA 7750
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
48h
41hh
Jewels
23
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$2,797
$299
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