Vtech Cordless Phone With Caller ID and Call Waiting features DECT 6.0 Digital technology. Provides the best sound quality, security and range in cordless phones. Interference free for crystal clear conversationswon't interfere with wireless networks and other electronic devices. Protect yourself from identity theft with digital securityyour call is digitized and encrypted, making it nearly impossible for someone to eavesdrop. Caller ID/call waitingstores 30 calls. 30 name and number phonebook directoryeasily store and dial frequently called numbers.