| 摘要 |
The support B, shown in FIG. 2, embodies an arched flexible plate 10, provided with suitably shaped extremities 12 which terminate with fins or bevelled edges 14 apt to engage with seats on the inside of helmet A between shell A1 and extremity A4 of padding A3 of said helmet. Plate 10 is shaped, at least in part, as a box, to house, in the corresponding positions, a microphone M and earphones T, connected to each other and to a battery C-amplifier D group. Connection with other supports or with radio transceivers is obtained via connectors G.
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