Panasonic KX-TG6671BThe Panasonic KX-TG6671B expandable, digital cordless telephone comes equipped with DECT 6.0 technology. Aside from offering outstanding range and clarity, the Expandable Digital Cordless Answering System with 1 Handsets features text-to-speech technology announces caller ID information while the phone rings. The Silent Mode option lets you turn off the handset ringer when you are sleeping. Additional features include intelligent eco mode, power back-up operation and 4-way conference capability. The KX-TG6671B DECT 6.0 Plus technology takes the superb sound quality and outstanding range of DECT 6.0 phones to a whole new level. By increasing the frequency of error correction up to 80x, the transmission quality is improved and the phones range is extended. Engineered to work in 1.9GHz frequency, our DECT 6.0 phones wont conflict with common wireless devices such as 2.4GHz routers, wireless keyboards and mice, microwave ovens and other household items. And because its digital, you'll enjoy long range and clear sound.KX-TG6671B Features:Expandable Up To 6 Handsets Speakerphone Clock & Alarm White Backlit LCD Display Ringer IDCustomize Ringer ID for Incoming Calls Lighted Keypad 50 Station Name / Number Caller ID Memory 100 Station Phone Directory / Dialer Message Waiting Indicator Handset to Base / Handset Intercom Up To 4-Way Conferencing 5 Number Redial Flash 4-Step Handset / Headset Volume Control 6-Step/Off Ringer Volume Control Handset/Base 6-Step Speakerphone Volume Control Bilingual Menu Support (English / Spanish) Handset Locator Voicemail Compatibility Chain Dial Belt Clip - Included w/ Brand New Models Headset Jack New DECT 6.0 Technology - Interference Free Communication - Increased Clarity / Enhanced Security - Wider Range / Network Friendly 1.9GHz Corded / Cordless Phone Combo - Dedicated for Cordless Phones by the FCC - 30% Battery Life Increase Over 5.8GHz Up To 13 Hours Talk Time Up To 11 Days Standby Mute Hold 60 Channel Operation Silent Mode Exclusive Panasonic Talking Features Talking Caller ID Talking Battery Alert Talking Alarm Clock Call Block Intelligent Eco-Mode Wall Mountable/Mount Included 18 Minute Digital Answering System Call Screening / Intercept Choice Mail - Quickly View & Retrieve a Specific Recorded Message Power Back-Up Operation Message Counter Visual Ringer