Grandstream HD Mid-Tier DECT Handset DP722Supports a range of up to 350 meters outdoors and 50 meters indoors when used with the DP752 (300 meters outdoors when used with DP750) 1. 8 inch (128x160) color LCD with 2 programmable soft keys Offers 20 hours talk time and 250 hours standby time Supports up to 10 SIP accounts and 10 lines per handset as well as 3 way conferencing Push to talk via a configurable button Seamless 1 touch door control with Grandstreams GDS series of Facility Access