High Power/High Sensitivity for extreme wireless range and connectivity. Speakerphone. 2-Way Intercom. Simultaneous broadcast to multiple handsets from any handset. Single Line. Operation Frequency: 902~928MHz (option for 902~915MHz & 915~928MHz). Up to 400mW/-111dBm transmit power. Phone book: 50 entries. Soft menu key. H/S speakerphone. Broadcast. Intercom. User friendly MMI. Key guard. Transmit power control. 3 type call logs. 4-line LCD display. Call on hold. Rapid charging. Mute. Call manager. Any key answer. Feature call: 10. Adjustable flash time. 2.5mm headset jack. Ringer/ vibrator.