Side by side

Sinn 856 S UTCvsBoldr Five-in-a-Row

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 856 S UTC

Owners widely praise the Sinn 856 S UTC for its legibility, robust build, and versatile wearability as an everyday and business-casual timepiece. The watch is frequently chosen for its adventurous UTC functionality and durability features, including tegimentation, anti-magnetism, and humidity protection, making it suitable for frequent travel. One owner reports accuracy of approximately -10 seconds per day. On balance, owners rate the Sinn 856 S UTC highly for its practical functionality and rugged construction.

Boldr Five-in-a-Row

Owners widely praise Boldr's lightweight titanium cases, value, and suitability for outdoor or adventure use. The 38mm size is considered perfect by some, and the topographical dial on one variant offers fantastic depth with well-matched Old-Radium C3 lume. However, some owners report issues with customer service and perceived poor quality for the price, while others find the 14mm thickness chunky and the dial cluttered, impacting legibility. Accuracy averages around +15 seconds per day, though specific complications like a pulsometer and respiration timer are noted as accurate and useful on one variant. Overall, owners rate Boldr highly for its lightweight, functional design and value, despite some concerns about build quality and legibility.

At a glance

17 of 29 specs differ
Diameter
856 S UTC40mm
Five-in-a-Row38mm
Power Reserve
856 S UTC38h
Five-in-a-Row
Water Resistance
856 S UTC200m
Five-in-a-Row200m
MSRP
856 S UTC$2,938
Five-in-a-Row$399

Full specifications

Case

6 specs
Diameter
40mm
38mm
Thickness
11mm
12.8mm
Lug-to-Lug
44mm
Material
Stainless Steel
Titanium
Finish
black
Caseback

Crystal & Dial

5 specs
Crystal Shape
AR Coating
Underside
Yes
Dial Color
Black
Five In A Row I
Indices
Lume
Luminescent
Super-LumiNova

Movement

5 specs
Caliber
Sellita SW330-2
Seiko NH35
Beat Rate
28,800 vph
0 vph
Power Reserve
38h
0h
Jewels
25
0
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$2,938
$399
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