Side by side
Seestern Sub 300 V4vsLum-Tec B66 Day Date
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
19 of 29 specs differDiameter
Sub 300 V442mm
B66 Day Date44mm
Power Reserve
Sub 300 V441h
B66 Day Date40h
Water Resistance
Sub 300 V4200m
B66 Day Date100m
MSRP
Sub 300 V4$10
B66 Day Date$545
Full specifications
Case
9 specsCategory
Diver
Sport
Diameter
42mm
44mm
Thickness
13mm
—
Lug-to-Lug
46mm
51.5mm
Lug Width
20mm
22mm
Material
316L Stainless Steel
Titanium (DLC coated)
Finish
Brushed + Sandblasted
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid screw-down
Solid
Crystal & Dial
4 specsCrystal
Sapphire
Domed Sapphire
AR Coating
Underside
Inner
Dial Color
Orange
Standard
Lume
Japan Lume (blue glow)
None
Movement
5 specsCaliber
Seiko NH35A
—
Beat Rate
21,600 vph
28,800 vph
Power Reserve
41h
40h
Jewels
24
25
Complications
GMT, Date
None
Pricing
1 specsMSRP
$10
$545
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