同埋呢又-又唔同嘅function，或者個閃燈會唔會要自己撳掣先至識得閃出來呢。有啲-有啲你要撳咗掣，
It's a different function from this, or a flashing light, will it have to be its own button to know how to flash it? Kind of - a little bit of the button you have to press,