How to pronounce 實用性 in Cantonese (5 out of 6):

主打實用性同打機功能
The main thing is the functionality and the gameplay.

Cantonese Sentence Breakdown

主打 zyu2 daa2
main hit
實用性 sat6 jung6 sing3
practicality
tung4
and
打機 daa2 gei1
to play video games
功能 gung1 nang4
function