Compaq 1610 Reference Manual page 12

Before setting up your handheld PC, be sure your shipping box
includes the following items:
handheld PC
AC Adapter
stylus (housed in the handheld PC)
auto-sync cable
batteries (two AA alkaline or one rechargeable NiMH,
depending on your C-Series model)
Not pictured:
modem cable (available with some models)
CD-ROM discs (2)
documentation
To order accessories that did not come with your C-Series
model, refer to the Accessories Flier included in the shipping box.