Nokia SU-33W is a Nokia's Mobile TV Receiver. With this optional DVB-H (Digital Video Broadcasting for Handheld) it is possible to watch television on the screen of the phone. Many Nokia mobile phones with Bluetooth are compatible.
This functionality is integrated into Nokia N92, Nokia N77 and Nokia N96 mobile phones and Nokia 5330 Mobile TV Edition features DVB-T too.
A 1seg version of this is also available in some South American countries and sold as SU-33Wb (using the SBTVD standard).
Compatible Nokia phones
References
Nokia SU-33W Wikipedia(Text) CC BY-SA