Will fit the following cordless phones: - Panasonic 36, Panasonic 37,3 Panasonic 8; AT&T HT-3400,AT&T HT-3500,AT&T HT-4310,AT&T HT-4410; Emerson TEC 3000; Sony SPP-55,Sony SPP-65,Sony SPP-90; Sanyo CAS120,Sanyo CAS130, Sanyo CLT440,Sanyo CLT520,Sanyo,Sanyo CLT6100, Sanyo CLT6300; C&W CWP200, C&W CWT300