Sony CLIE GEAR PEGA-MSB1 Operating Instructions Manual page 8

Communicating between two CLIÉ handhelds
Enjoying the supplied application "Reversi"
You can play a game of Reversi, using two communicating CLIÉ
handhelds. Install the Bluetooth preferences settings and the Reversi
application in the CLIÉ handhelds you use.
For details, see page 32.
PEGA-MSB1 and
CLIÉ handheld
Exchanging data
You can exchange data, including address information, between two
CLIÉ handhelds.
8 GB
PEGA-MSB1 and
CLIÉ handheld