It has a mirrored dish type reflector. The flash unit took a 22.5V anode battery, I think new equivalent batteries are still available.
Kodablitz Flash Boxed Manual Photography Blitzleuchte Vintage
Rollei Flash Unit 140 RES Flash Unit Flash
Centon FH85 Universal Flash unit. Auto flash unit and amazingly powerful
Pentax AF 160Sa Flash Unit for 35mm Camera, Electronic Flash Unit, Working, Box
Philips Flash 38CT Flash Unit Center Contact Camera Flash Shoe Mount Flash
