99 uses a daisy phone in the London fog.
Phone disguised as a daisy.
Sending and receiving seem to be accomplished by a single mechanism in the center of the flower. Jiggling one of the petals contacts the operator, suggesting that dialing is by the same means.
Dispensed by Agent 99 while undercover as a Cockney flower girl a la Eliza Doolittle, and used by her and Maxwell Smart to communicate during an assignment in London [Episode #70: "That Old Gang of Mine"].