ML440 IP DECT Handset and Charger Includes Handset, Battery Pack, Belt Clip, Charger Unit, AC Adapter for Charger Unit Compatible with DSX systems Multi line, wireless handset that provides superior sound quality that enables users to talk anywhere within the building Illuminated, color LCD display with GUI enables use in poorly lit environments 4 Programmable function keys 2.4mm headset jack Speakerphone provides hands free operation Talk time of 20 hours and 200 hours of standby time Ergonomic, compact design for improved user experience Maximum of 32 handsets per system Intercom calls between ML440 handsets, as well as ML440 handset and DSX IP keysets on the same LAN, are peer to peer and do not require a VOIPDB license