Side by side

AVI-8 Dambuster Operation Catechism 80th Dual Time Chronograph Limited EditionvsSinn U50 HYDRO SDR with TEGIMENT option

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

Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition
AVI-8Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition
MSRP $285
U50 HYDRO SDR with TEGIMENT option
SinnU50 HYDRO SDR with TEGIMENT option
MSRP $3,110

At a glance

17 of 29 specs differ
Diameter
Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition43mm
U50 HYDRO SDR with TEGIMENT option41mm
Power Reserve
Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition40h
U50 HYDRO SDR with TEGIMENT option40h
Water Resistance
Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition50m
U50 HYDRO SDR with TEGIMENT option5,000m
MSRP
Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition$285
U50 HYDRO SDR with TEGIMENT option$3,110

Full specifications

Case

8 specs
Category
Chronograph
Diver
Diameter
43mm
41mm
Thickness
11.8mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
bead-blasted
Water Resistance
50m
5000m
Caseback
Solid

Crystal & Dial

5 specs
Crystal
Mineral
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Underside
Indices
Applied
Lume
None
Luminescent

Movement

3 specs
Caliber
Ronda 715 Li - SWISS MADE
Jewels
25
5
Complications
None
Date

Pricing

1 specs
MSRP
$285
$3,110

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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.

AVI-8 Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition

The AVI-8 Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition features a dial that is considered neither boring nor overly loud, with case finishing described as acceptable for its price point. Its 43mm meca-quartz design is inspired by Avro Lancaster bomber cockpits and includes a 24-hour subdial with red accents, priced at US$255. The meca-quartz movement provides quartz accuracy and a sweep-second hand, though it is noted as less smooth than an automatic. However, its 51mm lug-to-lug measurement causes it to wear large on wrists up to 17.5cm. Overall, owners find the AVI-8 Dambuster Operation Catechism 80th Dual Time Chronograph Limited Edition to be a well-designed watch for its price, with its primary drawback being its substantial lug-to-lug measurement.

Sinn U50 HYDRO SDR with TEGIMENT option

The Sinn U50 HYDRO SDR with TEGIMENT option is widely praised for its exceptional scratch resistance and legibility, with owners reporting no signs of wear after extended use. The oil-filled case contributes to extreme water resistance and a clear dial, while the fully tegimented construction offers a soft feel on the wrist. Reviewers note the compact 41mm size, though one owner found it did not wear as thin as expected due to its thickness. The lume is considered underwhelming by some, and the diving extension on the clasp can release too easily. It utilizes a quartz movement, which is noted as less accurate than previous thermo-compensated options. Overall, owners and reviewers rate the Sinn U50 HYDRO SDR with TEGIMENT option highly for its robust, legible, and virtually indestructible build at its price point.

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