Điện thoại cầm tay không dây Yealink W77P• High-performance ruggedized SIP cordless phone system• Ruggedized DECT handset with IP54 protection rating• 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• Support Opus audio codec• Noise Reduction System• FNR (Flexible Noise Reduction)• Up to 36 hours talk time• Up to 600 days standby time• Quick charging: 10-min charge time for 2-hour talk time• TLS and SRTP security encryption• Vibration alarm gurantee you not to miss any call even in noisy situations• Charger wall mountablewith PSU