MARES comunicatore vocale subacqueo - device for underwater communications

BRAND
MARES
MODEL
Sea-Voice
TYPOLOGY
a device for underwater communications
USES
it allow short messages to nearby divers
BODY
plastic
PECULIARITY
natural functioning without wires and batteries
NOTE
speaking the bellows, partially inflating, spreads the voice
NATIONALITY
Italy
YEAR OF PRESENTATION
1976
ORIGIN
Luigi Fabbri collection