Cisco CP-BATT-7920-EXT Extended Lithium ion Battery for Cisco 7920 Wireless IP Telephone, 4.25 Hours of Talk Time, Up to 40 Hours of Standby Time
Cisco CP-BATT-7920-EXT Extended Lithium ion Battery for Cisco 7920 Wireless IP Telephone, 4.25 Hours of Talk Time, Up to 40 Hours of Standby Time