SSM-21A Speaker Mic for HX890, HX400, HX400IS, HX380, HX40 HX210Standard Horizon SSM-21A submersible speaker microphone with heavy-duty belt clip. Compatible with Standard Horizon HX890, HX400, HX400IS, HX380, HX40, and HX210. SpecificationsType MicrophonesBox Dimensions 3H x 5W x 7L WT 0.45 lbsUPC 788026174768 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Supplier Number 88589