Most of the expert reviews online state that 1) The camera is Average and shutter speed is slow. (If I was looking at good camera I would go for a gs3 or something similar)
2) Speaker seems to be decent from all the Motorola devices that I've had and has usually been a bit louder than comparable Samsung devices.
When you say speaker, I'm assuming you mean the loudspeaker and not the audio clarity of the device in general. If so Motorola is known for their excellent call clarity