 |  | | | The flagship 4C model can support all modes of operation - Simplex, Full Duplex, and Half Duplex. Includes VOX 130, has dual batteries, and extended distance coverage. |
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|  | | | The lower cost/lighter weight 4S model supports Simplex mode only, has no VOX, has a single battery, and intermediate distance coverage. |
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|  | | | Earmark Belt-Paks provide productive communications for a variety of hostile and difficult environments. Radio features and functions are almost identical to those of Earmark's radio Headsets. |
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|  | | | Flex-Pak, a new, body worn, form fitting radio, complements Earmark's steadily growing line of communication products for industry and government. |
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