Excellent review as always, Matt ;)
"The charger still uses the pulse style charging [ similar to WF-139 , WF-188 ] where it charges and then stops to check the battery and then continues .. [ Hence the term pulse charging ]"
... and similar to WP1? Would be great to know if they just added USB port and 1A charge rate or improved charging performance as well. (can't see any changes tho, the same pulse charging and slightly high mA termination)