Side by side
Isotope Old Radium Bronze PilotvsSeiko 5 Sports Field series
The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.
At a glance
14 of 29 specs differDiameter
Old Radium Bronze Pilot40mm
5 Sports Field series39.4mm
Power Reserve
Old Radium Bronze Pilot40h
5 Sports Field series41h
Water Resistance
Old Radium Bronze Pilot100m
5 Sports Field series100m
MSRP
Old Radium Bronze Pilot$1,096
5 Sports Field series$450
Full specifications
Case
6 specsCategory
—
GMT
Diameter
40mm
39.4mm
Thickness
10.1mm
13.6mm
Lug-to-Lug
0mm
47.9mm
Lug Width
0mm
20mm
Material
Bronze
Stainless Steel
Crystal & Dial
4 specsCrystal
Sapphire
Hardlex
Crystal Shape
—
Curved
Dial Color
—
—
Lume
None
LumiBrite on hands and index(es)
Movement
3 specsCaliber
—
Seiko 4R34
Power Reserve
40h
41h
Jewels
0
24
Pricing
1 specsMSRP
$1,096
$450
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 Isotope Old Radium Bronze Pilot vs Seiko 5 Sports Field series 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.
Seiko 5 Sports Field seriesvsTSAO Baltimore Legacy Bronze - Green FumeSeiko 5 Sports Field seriesvsWhitby Watch Co. Canuck Pilot Watch - 39mm MK ISeiko 5 Sports Field seriesvsTSAO Baltimore Legacy Bronze GMT - Midnight GreyFarer PILOT SERIES IIvsSeiko 5 Sports Field seriesIsotope Old Radium Bronze PilotvsWolbrook Skindiver WT AutomaticIsotope Old Radium Bronze PilotvsGruppo Gamma Field III GMT Date