1-line x 16 character Caller ID LCD 8 Programmable CO keys with dual color LED Whisper off-hook Announce Hands-free speakerphone Large message/ringing lamp (red/green) Digital XDP (eXtra Device Port) Jack Part Number: KX-T7665
Compatibility Compatible with Panasonic KX-TDA50G, KX-TDA100, KX-TDA200, KX-TDA600, KX-TDE100, KX-TDE200, KX-TDE600, KX-NCP500, KX-NCP1000 Business Phone Systems.