What is this?
projector
What is this?
screen
What are these?
headphones
What are these?
trainers
What is he wearing?
a suit
What is the gray thing he is wearing?
waistcoat
What is this?
microphone
What is this?
laptop
What is this?
tracksuit
What are these?
speakers
What is this?
handkerchief
What is this?
bow tie
What is he wearing on his head?
hat
What is this?
digital camera
What are these?
mobile phones
What is this?
video camera
What are these?
lights