Hair trimming is very much Wahl’s turf ... you should look into clippers that have a zero-gap option [like the BabylissPRO clippers or the Andis Slimline Pro trimmer on this list]).
Repeat after me: Beard trimmers and hair clippers can’t be used interchangeably. Many beard trimmers will cut too close to the head, leaving little room to “go shorter,” explains barber Mike ...