Connectivity Technology:CordlessWireless Technology:DECTWireless Operating Distance:984.25 ftFeatures:Speakerphone,Conference Call,Message Waiting,Indicator,Belt Clip,Hearing Aid,Noise Reduction,Hold,Call Transfer,Call Forwarding,Call Park,Call Pick-up,Phone Book,Call Waiting,Caller Log,Auto-answer,Hold-on Music,Multilingual Menu,Rechargeable BatteryFrequency Range:1.88 GHz to 1.90 GHzScreen Size:1.8"Screen Type:TFT LCDScreen Resolution:128 x 160USB:YesHeadset Port:YesButtons & Keys:Soft Key,Navigation Key,Menu,End Button,Speaker,Mute Button,SendBattery Talk Time:20 HourBattery Standby Time:250 HourColor:BlackHeight:6.1"Width:2"Depth:1"Weight (Approximate):4.87 ozCompatibility:Grandstream DP750 DECT VoIP Base StationCountry of Origin:China