Yealink W57R​ Part Number: YEA-W57R

Features

• Ruggedized design with IP54 rating (dustproof and water-resistant)​ ​
• Drop-resistant from heights up to 3.5 meters​
• Shock-absorbing rubber casing for enhanced durability​
• 2.4" color display (240 × 320 resolution)​
• Yealink Optima HD Voice for crystal-clear calls​
• Noise Reduction System for loud environments​
• Supports Opus and G.722 codecs​
• Full-duplex speakerphone​
• Up to 40 hours talk time​
• Up to 575 hours standby time
• Quick charging capability​
• Supports up to 2 simultaneous calls per handset
• 3.5mm headset jack for wired headset connection​​
• Belt clip included for portability​
• Local phonebook (up to 500 contacts)​
• XML/LDAP remote phonebook support​
• Call history: missed, received, dialed​
• Telephony features: hold, transfer, forward, mute, DND, redial, voicemail, intercom
• Message Waiting Indicator (MWI)
• Indoor range: up to 50 meters​
• Outdoor range: up to 300 meters
• Seamless handover and roaming in multi-cell systems​
• DECT encryption for secure calls​
• OTA (Over-the-Air) firmware updates​
• Compatible with Yealink W70B, W80DM, and W90DM base stations​