Yealink w56h dect cordless handset - display - 2.4' 240 X 320 color screen - lines - up to 2 simultaneous calls per handset - talk time - 30 hours talk time, up to 400 hours standby time - headset support - 3.5 Mm jack - Dect range - up to 50 meters indoor, up to 300 meters outdoor yealink w56p is the next-generation sip cordless phone system combining quality, reliability and flexibility. Offering the convenience of cordless with a simple add-on device without losing the sip features, it brings a seamless call management for our users while "on-the-go". With more functions, lines and mobility, it empowers users with the convenience of wireless communication along with the widely accepted benefits and feature richness of voice-over-IP telephony. Yealink W56H Dect cordless handset phone features up to 2 simultaneous calls per handset handset select for receiving call handset and number select for making call auto intercom, auto answer call hold, call transfer switching between calls 3-way conference call waiting, mute, DND redialing of last 20 numbers entered call forward (always/busy/no answer) speed dial, voicemail, silence 100 phone book memory (store in the base) remote phonebook phonebook search, black list call log(outgoing/missed/accepted) direct IP call without sip proxy reset to factory, reboot keypad lock, emergency call anonymous call, anonymous call rejection voice features full-duplex speakerphone receiver volume control: 5 steps ringer volume control: 5 steps off 9 ringer melodies multiple advisory tones acoustic warning for low battery status.