Grandstream DP722 DECT Cordless HD Handset

Supports a range of up to 350 meters outdoors and 50 meters indoors when used with the DP752 (300 meters outdoors when used with DP750), 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