Side by side
Noctua Watch Corp. SentinelvsSeiko Prospex SPEEDTIMER Mechanical
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Sentinel42mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
Sentinel—
Prospex SPEEDTIMER Mechanical72h
Water Resistance
Sentinel300m
Prospex SPEEDTIMER Mechanical200m
MSRP
Sentinel$429
Prospex SPEEDTIMER Mechanical$995
Full specifications
Case
6 specsCategory
—
Chronograph
Diameter
42mm
39.5mm
Thickness
15mm
12mm
Lug-to-Lug
46mm
44.5mm
Lug Width
22mm
20mm
Water Resistance
300m
200m
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
—
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Seiko NH35A
6R55
Power Reserve
—
72h
Jewels
25
24
Pricing
1 specsMSRP
—
$995
More watches worth a look
Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.
Follow this matchup
Get a note when Noctua Watch Corp. Sentinel vs Seiko Prospex SPEEDTIMER Mechanical gets more votes, a community discussion, or a price drop. No account needed.
People also compared
Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.
Serket Watch Co Reef X Diver Black DLCvsSeiko Prospex SPEEDTIMER MechanicalSeiko Prospex SPEEDTIMER MechanicalvsUgly Watch Co 300mDSeiko Prospex SPEEDTIMER MechanicalvsVentus Watches MoriNoctua Watch Corp. PD-1vsSeiko Prospex SPEEDTIMER MechanicalNoctua Watch Corp. SentinelvsYema Flygraf NavigatorNoctua Watch Corp. SentinelvsYema Navygraf Chrono