Side by side

Sinn 1739 Ag BvsFortis Marinemaster M-40

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

Add a watch

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

What people say

Owners + reviewers, side by side

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

Sinn 1739 Ag B

Owners are thrilled with the Sinn 1739 Ag B, citing its beauty as a primary reason for collection consolidation. The watch has a 30+ week waiting list and won a Red Dot award. Overall, owners rate the Sinn 1739 Ag B highly for its aesthetic appeal and desirability, evidenced by its significant waiting list and design award.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

From video reviewers

The watch's Swiss Made construction and robust design are consistently praised. Reviewers noted the bracelet as a potential point of contention.

At a glance

16 of 29 specs differ
Diameter
1739 Ag B39mm
Marinemaster M-4040mm
Power Reserve
1739 Ag B42h
Marinemaster M-4038h
Water Resistance
1739 Ag B100m
Marinemaster M-40300m
MSRP
1739 Ag B$2,894
Marinemaster M-40$3,520

Full specifications

Case

8 specs
Category
Tool
Diver
Diameter
39mm
40mm
Thickness
9.1mm
13mm
Lug Width
20mm
21mm
Material
special material: 935 Argentium* silver alloy. The advantage
Stainless Steel
Finish
Water Resistance
100m
300m
Caseback

Crystal & Dial

4 specs
Crystal Shape
AR Coating
Underside
Dial Color
Blue
Orange
Indices
Applied

Movement

3 specs
Caliber
Sellita SW300-1
Sellita SW220-1
Power Reserve
42h
38h
Jewels
25
26

Pricing

1 specs
MSRP
$2,894
$3,520
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

DiscussionNot started
Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.