Motorola Original BDN6774A: Lightweight Headset, Earpeice with boom microphone (worn over ear with streamline boom microphone). This part number is also known as part number 53863.
Fits:CP100, SP21, SP10, VL50, AXU4100, AXV5100, CLS1110CB, CLS1450CH, XU1100, XU2100, XU2600, XV2100, XV2600, DTR550, DTR650, DTR410
NOTE: To avoid confusion, for ordering purposes, the suffix letter after the stock number is not listed.