The XA 1 is the most basic of the Olympus XA range.
It has a Selenium meter which works well and means that the camera does not need a battery.
The lens is fixed focus, being 35mm in focal length the most of the image is in focus.
Camera is super for street photography and snaps as it is so quick to use.
The shutter is also of a simpler design than the other models and appears to be more reliable,