Side by side

Sinn 103 StvsBoldr Expedition II

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.

Sinn 103 St

The Sinn 103 St is widely praised for its classic chronograph appeal and purposeful 41mm size, with owners finding the Ty Hd variant stunning in person. Reviewers highlight its domed acrylic crystal and consider the model an outstanding value for the money. Some owners note the 103 St Sa E's 17mm thickness may be an issue, despite its wearable case dimensions. The Sinn 103 St is also recognized as a space-capable watch, having been worn on a MIR mission. Overall, owners and reviewers rate the Sinn 103 St highly for its classic chronograph design and strong value proposition.

Boldr Expedition II

Owners widely praise the Boldr Expedition II for its tool watch utility, legible dials, and bead-blasted finish, with many finding its 41mm size ideal for daily wear and comfortable on various wrists. Reviewers and owners alike highlight its excellent value, well-executed details, and the functional design of its knurled crown. Some owners note the dial color can appear creamier than expected online, and one reviewer found the stock rubber strap to be a minor criticism. The Sellita SW200 movement and domed sapphire crystal are also noted as positive features. On balance, owners and reviewers rate the Boldr Expedition II highly for its functional field watch design and excellent value.

From video reviewers

The Boldr Expedition II's solid construction and reliability are notable strengths. A weakness is the potential for dim lume brightness, as the entire dial is fully covered in lume but the reviewer's assessment implies it might be inadequate.

At a glance

16 of 29 specs differ
Diameter
103 St41mm
Expedition II41mm
Power Reserve
103 St48h
Expedition II38h
Water Resistance
103 St200m
Expedition II200m
MSRP
103 St$2,538
Expedition II$699

Full specifications

Case

4 specs
Thickness
15.5mm
14mm
Lug-to-Lug
48mm
Finish
polished
Caseback

Crystal & Dial

6 specs
Crystal
Acrylic
Sapphire
Crystal Shape
AR Coating
Yes
Dial Color
Black
I Eiger
Indices
Lume
Luminescent
Super-LumiNova

Movement

5 specs
Caliber
Concepto C99001
Sellita SW200-1
Beat Rate
28,800 vph
0 vph
Power Reserve
48h
38h
Jewels
25
0
Complications
Date, Day-Date, Chronograph, Pilot's Bezel
None

Pricing

1 specs
MSRP
$2,538
$699
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