"Yealink DECT IP Phone • High-performance SIP cordless phone system • 1.8"" 128 x 160 TFT black-and-white screen with intuitive user interface • Up to 20 simultaneous calls • Up to 10 DECT cordless handsets • Up to 10 SIP accounts • Noise Reduction System • FNR (Flexible Noise Reduction)/Noise Cancellation • Up to 35-hour talk time (in ideal conditions) • Up to 400-hour standby time (in ideal conditions) • Quick charging: 10-min charge time for 2-hour talk time • TLS and SRTP security encryption • Charger wall mountable with PSU"