Palm 600 User Manual page 158

Customizing
Leather Side Case With Belt Clip
Clips to your belt or bag and provides both quick access and protection for your phone.
Stereo Headphone Adapter
Converts a mini-stereo phone connector to a 2.5mm connector so that it is
compatible with the headphone jack on your phone. This enables you to listen to
MP3 files on your Treo with your own stereo headphones.
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