Tested and fully working.
The Praktica BX20 was produced between 1987 and 1990, over 200.000 pieces have left the factory.
aperture priority functionality
shutter speeds from 1 sec. to 1/1000 sec.
LED shutterspeed indicator in viewfinder
TTL flash measuring
flash synchronisation 1/90sec.
EV correction switch from -2 to +2
selftimer, 10 sec.
fresnel focus screen with microprism (95% coverage)
PB (Praktica Bayonet) mount
light measuring through silicium cell
powered by 6V PX28 battery
weight: 510 gr.