Side by side
Biatec T. G. MasarykvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
13 of 29 specs differDiameter
T. G. Masaryk40mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
T. G. Masaryk41h
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
T. G. Masaryk100m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
T. G. Masaryk$2,214
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500
Full specifications
Case
5 specsCategory
—
Chronograph
Diameter
40mm
42mm
Thickness
11.15mm
14.6mm
Lug-to-Lug
48mm
49.5mm
Material
316L Stainless Steel
Stainless Steel
Crystal & Dial
4 specsCrystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Beige
Black
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
Sellita SW200-1
8R48
Power Reserve
41h
45h
Jewels
25
34
Pricing
1 specsMSRP
—
$2,500
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 Biatec T. G. Masaryk vs Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition 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.
Feynman Timekeepers CoalescevsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionMaen Manhattan 37 IFL EditionvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionMeridiano Watches Lost AstronautvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionHumism DaseinvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionBiatec T. G. MasarykvsYema Flygraf NavigatorBiatec T. G. MasarykvsYema Navygraf Chrono