 Aside from the visual and feature distinctions , the underlying CE versions can be used to differentiate <unk> from WM 6 @.@ 1 . The version of Windows CE in WM 6 @.@ 0 is 5 @.@ 2 . * , with the final number being a 4 digit build ID ( e.g. 5 @.@ 2 @.@ 1622 on HTC Wing ) . In WM 6 @.@ 1 , the CE version is 5 @.@ 2 . * with a 5 digit build number ( e.g. 5 @.@ 2 @.@ <unk> on Palm <unk> <unk> ) . 
