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Standard Horizon SSM-21A Speaker Mic f/HX890, HX400, HX400IS, HX380, HX40 & HX210
SSM-21A Speaker Mic for HX890, HX400, HX400IS, HX380, HX40 & HX210
Standard Horizon SSM-21A submersible speaker microphone with heavy-duty belt clip. Compatible with Standard Horizon HX890, HX400, HX400IS, HX380, HX40, and HX210.