Loudspeaker; part of VRC-12 series – vehicular VHF radio communication equipment, used by all tactical echelons.
Used by the US military from 1963 until early 1990s, designated LS-454/U.
Used by the IDF during the War of Attrition (1967-1970), the Yom Kippur War (1973), the Peace for Galilee War (1982), the Security Zone Conflict (1982-1000) and the Second Lebanon War (2006), until recently.
Connected to the transceiver by five pin audio connector U-229/U.