The Panasonic KX-WP110B DECT 6.0 Plus Expandable Digital Cordless Phone, with 1 handset, can handle up to six handsets on the same line (additional handsets sold separately). This model takes on your day-to-day communication needs with call waiting caller ID, call block, silent mode, and more. DECT 6.0 Plus technology takes superb sound quality and outstanding range to a whole new level. And with the handset locator, you'll never lose track of your handset again. Finally, this unit is Energy Star Certified if all of this wasn't enough already!