Side by side

RZE AspirarevsSinn U1 S L

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

U1 S L
SinnU1 S L
MSRP $3,532
What people say

Owners + reviewers, side by side

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

RZE Aspirare

The RZE Aspirare is widely praised for its exceptional value and build quality at $599, featuring a 44mm titanium case with UltraHex coating and a Miyota 9015 movement. Owners find the watch surprisingly comfortable, even on smaller wrists, and appreciate its modern, futuristic design and interchangeable bezel system. Some reviewers note the minute hand appears slightly short relative to the chapter ring, and the 53mm lug-to-lug may be challenging for smaller wrists. On balance, owners and reviewers rate the RZE Aspirare highly for its robust titanium construction and strong value proposition.

Sinn U1 S L

The Sinn U1 S L is widely praised for its intense, full-lume dial, a feature described as new technology that glows brightly, and its unique black and white "arctic tactical" aesthetic. Owners and reviewers consistently highlight the Tegimented German submarine steel case for its exceptional scratch resistance and matte, non-reflective finish, with one owner reporting no scratches on the case after 17 years. The watch is also noted for its legibility and robust build, offering 1000m water resistance. However, some owners find the 44mm size and 14.7mm thickness wear large, and one reviewer noted the 4 o'clock crown positions lacked distinct clicks, leading to difficult date changes. Accuracy figures for the ETA 2824-2 movement vary, with one owner seeing +1/+2 s/day and another about -6 s/day. The Tegimented bracelet is reported to scratch more easily than the case by some, while others found it held up well.

At a glance

15 of 29 specs differ
Diameter
Aspirare44mm
U1 S L44mm
Power Reserve
Aspirare
U1 S L38h
Water Resistance
Aspirare200m
U1 S L1,000m
MSRP
Aspirare$699
U1 S L$3,532

Full specifications

Case

6 specs
Thickness
13mm
14.7mm
Lug-to-Lug
53mm
Material
Grade 5 Titanium
Stainless Steel
Finish
black
Water Resistance
200m
1000m
Caseback
Solid screw-down

Crystal & Dial

4 specs
Crystal Shape
Dial Color
White
Black
Indices
Lume
None
Luminescent

Movement

4 specs
Caliber
Miyota 9039
Sellita SW200-1
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
38h
Jewels
0
26

Pricing

1 specs
MSRP
$699
$3,532
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