CRDLSS PHONE 2 LINE ACSRY HNDSTUSED W/DS6151, BLK/Accessory handset only, requires base to operateDECT 6.0 Digital technology provides the best sound quality, security and range in cordless phones2-line operationCaller ID/call waiting*—stores 50 calls Handset speakerphone—enjoy hands-free conversationsHearing aid compatibleProtect yourself from identity theft with digital security50 name and number phonebook directory—easily store and dial frequently called numbersConference an outside call between handsets Intercom/transfer calls between handsets100% RoHS compliant Bilingual prompts—choose between English or SpanishBlue backlit keypad and display ENERGY STAR qualified cordless phoneHandset volume control; last number redial; page/handset locatorSelectable ring tonesWiFi friendly-won't interfere with wireless networks