... Protocol: IEEE 802.11b/g/n,8.Two way audio: With built-in microphone and speaker9.Memory: Supports up to 64GB ... .AudioBuilt in Microphone and Speaker, ADPCM/32kbpsInterface10Base-T / 100Base-TX, RJ45 connector Network ProtocolTCP/IP,HTTP,TCP,UDP,SMTP,FTP,DHCP,DNS ...