In season 3 and part of 4 it is believed to be a Hamilton Khaki King H64451533.
In most of season 4 and 5 it is a Casio Sea Pathfinder, model Spf40-1v
Reference:
http://watchesinmovies.info/displayimage.php?album=58&pos=2
Casio SeaPathfinder.....in some episodes and sometimes he also wears a hamilton khaki king
House MD wears a Casio Sea Pathfinder SPF40-1V.
The character of Dr. House does not seem to wear an "official" watch. Some people have suggested his watch looks like a Casio Pathfinder.
Gucci
It is a wristwatch
Luminox watch series
Nike LD1000 (Vintage)
He has quite a few - I've seen him with at least 6 or 7 different ones!!
ddd
WRISTWATCH
Gucci
Cartoer
It is a wristwatch
Bulava Precisionist
rolex datejust 18k
TAG Heuer Carrera
Apparently he carried a pocket watch, no wristwatch.
Luminox watch series
Corum $20.00 gold piece watch
Patek Phillippe calitrava quartz