The phone supports E911. 360 hours of standby time.
Audiovox sold out to another company and the model became CDM9900, but verizon still called it the VX9900.
I think this is the phone listed as VX9900 on the warrant:
http://www.utstar.com/handsets/view_phone_details.aspx?mcode=CDM9900&bID=12&sAct=past