- Supports a range of up to 400 meters outdoors and 50 meters indoors when used with the DP752 (300 meters outdoors when used with DP750) - 2.4 inch (240x320) color LCD with 3 programmable soft keys - Offers 40-hour talk time and 500-hour standby time - Supports up to 10 SIP accounts and 10 lines per handset as well as 3-way conferencing - Dedicated push-to-talk button, built-in proximity and accelerometer sensors for gesture control and alert notification - Supports video streaming display and seamless 1-touch door control with Grandstream's GDS3700 series Door Cameras - HD audio on the speakerphone, handset, and headset jack - Software and firmware updates over-the-air Call Waiting: Yes Caller ID (CID): Yes Conference Calling: Yes Corded or Cordless: Cordless Headset Port: Yes LCD Backlit Display: Yes Power Source: PoE and AC Adapter Power Supply Included: Yes SIP or Proprietary IP: SIP Phones Speakerphone: Yes Voicemail: Yes Color: Silver