Side by side

Lum-Tec B66 Day DatevsMarathon Steel Navigator SSNAV-D Auto

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

B66 Day Date
Lum-TecB66 Day Date
MSRP $545
Steel Navigator SSNAV-D Auto
MarathonSteel Navigator SSNAV-D Auto
MSRP $1,400

At a glance

11 of 29 specs differ
Diameter
B66 Day Date44mm
Steel Navigator SSNAV-D Auto41mm
Power Reserve
B66 Day Date40h
Steel Navigator SSNAV-D Auto40h
Water Resistance
B66 Day Date100m
Steel Navigator SSNAV-D Auto60m
MSRP
B66 Day Date$545
Steel Navigator SSNAV-D Auto$1,400

Full specifications

Case

7 specs
Category
Sport
Pilot
Diameter
44mm
41mm
Thickness
—
11mm
Lug-to-Lug
51.5mm
48mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
316L Stainless Steel
Water Resistance
100m
60m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
Standard
Black

Movement

1 specs
Caliber
—
Sellita SW220-1

Pricing

1 specs
MSRP
$545
$1,400

Follow this matchup

Get a note when Lum-Tec B66 Day Date vs Marathon Steel Navigator SSNAV-D Auto gets more votes, a community discussion, or a price drop. No account needed.

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.

Zelos Hammerhead V3 300m Titanium
Zelosmicro

Hammerhead V3 300m Titanium

2 watches · 16 variantsHammerhead V3
44mm·Automatic·300m WR
$559MSRP
—Used
Yema Flygraf Navigator
Yemamicro

Flygraf Navigator

5 watches · 7 variantsFlygraf
40mm·Automatic·100m WR
$1,199MSRP
—Used
AVI-8 Sabiha Gökçen 24-Hour Automatic Limited Edition
AVI-8micro

Sabiha Gökçen 24-Hour Automatic Limited Edition

3 variantsSabiha Gökçen
42mm·Automatic
$465MSRP
—Used
Marathon Arctic OSAR 41mm Automatic
Marathonmicro
OSAR

Arctic OSAR 41mm Automatic

6 watches · 6 variantsOSAR
41mm·Automatic·300m WR
$1,800MSRP
—Used
Yema Superman Titanium Tourbillon CMM.31 Limited Edition
Yemamicro

Superman Titanium Tourbillon CMM.31 Limited Edition

9 watches · 22 variantsSuperman
43mm·Automatic·300m WR
$13,000MSRP
—Used
Zelos Eagle 2
Zelosmicro

Eagle 2

5 variantsEagle
39mm·Automatic·100m WR
$899MSRP
—Used
Praesidus Neptune 44
Praesidusmicro

Neptune 44

2 variantsNeptune 44
44mm·Automatic·200m WR
$550MSRP
—Used
AVI-8 Spitfire Type 300 Automatic
AVI-8micro

Spitfire Type 300 Automatic

8 watches · 31 variantsSpitfire
42mm·Automatic
$400MSRP
—Used
All alternatives to the B66 Day Date →All alternatives to the Steel Navigator SSNAV-D Auto →
Explore the full catalog
Adjacent matchups

People also compared

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

Marathon Steel Navigator SSNAV-D AutovsZelos Hammerhead V3 300m TitaniumZelos Crystallised TI LEvsMarathon Steel Navigator SSNAV-D AutoZelos Hammerhead (Tantalum LE)vsMarathon Steel Navigator SSNAV-D AutoMarathon Steel Navigator SSNAV-D AutovsYema Superman Titanium Tourbillon CMM.31 Limited EditionLum-Tec B66 Day DatevsYema Flygraf NavigatorAVI-8 Sabiha Gökçen 24-Hour Automatic Limited EditionvsLum-Tec B66 Day Date
Edit this comparisonAdd another watchExplore more 40–45mm watches