Below is a listing of all the default fields that will sync with Handheld Contact Professional.  You have the ability to add up to 42 more custom fields.  The total number of fields that will sync are 73.

Company
First Name
Last Name
Title
Department
E-Mail
Personal Email
Phone
Extension
Fax Phone
Home Phone
Mobile Phone
Pager (Defaulted OFF)
Alternate Phone
Alternate Extension
Address 1
Address 2
Address 3
City State
ZIP Code
Country
Spouse (Defaulted OFF)
Home Address 1
Home City
Home State
Home Zip Code
Home Country (Defaulted OFF)

Web Site
ID/Status
Last Results