InfoLink DECT 6.0 RSS accessory handset for GE-28320EE2- Belt Clip Backlit LCD- Base Speakerphone Call Waiting Caller ID- Do Not Disturb DECT 6.0 Technology- Handset Speakerphone with Volume Control Headset Jack- Hearing Aid Compatible Message Indicator- Desk or Wall Mountable Dial Back Function/Redial- Digital Recording Technology Flash Function- Handset Volume Control Mute- One-Touch Redial Page/Find Button- Remote Message Retrieval Ringer Volume Control- Ringer Select/Toll Saver Speakerphone with Volume Control- Tone/Pulse Switchable Enhanced Visual Ringer