Yes Pampers Swaddlers diapers do have the wetness indicator on their diapers.
Pampers Swaddlers diapers have the wetness indicator on all sizes of the Pampers Swaddlers Diapers but Pampers Baby Dry Diapers have the wetness indicator on only size Newborn, Size 1 and Sizes 2.
But Pampers Swaddlers has the wetness indicator on all sizes of diapers.
The wetness indicator will be a yellow strip on the front of the diaper that changes color when the diaper is wet and needs changed.
You can feel the diaper too to see if it needs changed and if it's squishy then it's usually ready to be changed but if it's not squishy then it's still dry enough to not need changed.