how to get Wah Wah Watson tone in Herbie Hancock's stepping in it

[dcebollero]

Does anybody know how Wah Wah Watson achieves this growling effect with the Wah Pedal around 0:26:

https://www.youtube.com/watch?v=ZcZ5NNuPq-c

It sounds like its broken up but doesnt quite sound like distortion or overdrive. And definitely hear some reverb on it but I am struggling to get the growl sound. Any help would be appreciated thank you!!

 

[Gtrjunior]

how to get Wah Wah Watson tone in Herbie Hancock's stepping in it

Maybe a fuzz and it sounds like whammy bar fully depressed

Edit:
Actually, considering the time period, wasn't Moog and Roland rolling out the guitar synths then?