Bus no. A22 from Airport to Shanggai Street

Hi, i will be staying over at an apartment in Po Wah Building in Temple Street, Jordan. I am planning to take Citybus A22 from airport and dropping off at the 3rd stop near Shanghai Street. I read that the fare is 39hkd. How long does the journey take? And do i need to press the bell for the bus to stop upon reaching shanghai street, or is there any announcement in the bus before it reaches the next stop?