You don't need a wireless remote control, just someting you can turn on (or he can) and buzzes away in one or the other of you. Nothing like trying to carry on a conversation at dinner while you are approaching an orgasam, especially if another couple is with you.

In public jerk him off or make him jerk off and squirt all over his shirt and pants, and go out like that. If it's your turn, he can come on you (face, breasts, etc) and you have to go around with it there.