From Leica Wiki (English)
- Production era - 1950-1959
- Code names - CEYOO
- VLOOF-15532 spare, folding reflector
- COOUY-15536 spare capacitor
- CTOOM-15545 bracket to hold flash unit vertical or at angle with white plastic early versions and later with black painted metal (not shown).
- Type - Flash unit for cameras with F synchronization starting with Leica IIIf. Accepted E.S. and S.C.C. bulbs
- CAVOO 1951-1953 - sim. to CEYOO for non-synchronized Leica cameras
- CEYOO-PARAL 1952-1958 - CEYOO with rectifier to allow simultaneous firing of more than one flash unit.
- CEYAL-15506 - code name for CEYOO-PARAL after 1959.