Grandstream DP720 DECT Cordless VoIP Handset BPD002btWH for effortless portability for effortless portability The CH160 can support giant air coolers up to 172mm in height 5 mm Headset Jack Maximum Lines & SIP Accounts Up to 20 Lines & 20 SIP Accounts (with DP755) or Up to 10 Lines & 10 SIP Accounts (with DP752 DP750) Conference Calling 3 Way Audio Conference Security DECT Authentication & Encryption Talk Time Up to 20 Hours Standby Time Up to 250 Hours Battery Rechargeable 800mAh Ni MH Low Self Discharge (LSD) AAA Batteries Charging Micro USB and Charging Cradle Package Contents Handset 🔒 Secure Business Calling Uses DECT authentication and encryption technology to help protect calls and account information during communication