Plantronics headset

Question

My headset is approx. 4 years old.  I came to your internet site and under 'over the head' headset it lists (135).  I assume that is how many you show.  Why are there only 10 showing?On the headset itself it says plantronics, nothing else.  No model name or # and I have yet to find the picture of it. It is the microphone that doesn't work.  When I saw the (135) I was excited thinking maybe I could finally get a picture of the headset and model # etc.  No such luck.