High-performance SIP cordless phone system 1.8' 128 x 160 TFT color screen with intuitive user interface Up to 20 simultaneous calls Up to 10 DECT cordless handsets Up to 10 SIP accounts IP67 Ruggedized DECT Handset Noise Reduction System FNR (Flexible Noise Reduction)/Noise Cancellation Up to 28-hour talk time (in ideal conditions) Up to 360-hour standby time (in ideal conditions) Quick charging: 10-min charge time for 2-hour talk time