What is the unit of fixed bandwidth calculated from gwr.sel?

Hi,

OS: Windows with 4 GB Ram. R-2.70

I calculated bandwidth using the gwr.sel function from the spgwr package

dat.bw.cv<-gwr.sel(yimp00~ english + slope30 + mac95d + mdinc_t + musa00 +
popden_t + dissewer + dismcd
                   + diswater + ag04 + c1dishwy + c1dipark + tccost1 +
soil1 + soil2, data=dat,
                   coords = cbind(dat$longx, dat$laty), longlat=TRUE,
verbose = FALSE)

My x,y matrix is in latlong coordinates and hence the option is longlat =
TRUE.  As per the manual, if longlat is TRUE, the distances are used on an
ellipse with WGS84 parameters. The output is:
dat.bw.cv
69.79589

My question is what is the unit of the fixed bandwidth here?

Thanks,
Debs.