PLANTRONICS CT12 2.4 GHz Cordless Headset Phone With Call Waiting Caller ID

2. 4 GHZ SINGLE-LINE SYSTEM WITH DIGITAL SPREAD SPECTRUM TECHNOLOGY FOR INCREASED SECURITY; BACKLIT LCD DISPLAY; CALLER ID CALL WAITING; 100-NAME/NUMBER;CALLER ID/MEMORY LOCATIONS; ULTRA-COMPACT DIAL PAD FITS IN PALM;OF HAND; COLOR-DIFFERENTIATED ;KEY PAD WITH EASY-TO-USE BUTTONS; 10-NUMBER SPEED DIAL, REDIAL & VOLUME CONTROL/MUTE; CHOICE OF 10 RINGTONES; NOISE-CANCELING MICROPHONE;ON 2-IN-1 HEADSET (USE HEADBAND OR EARLOOP); MICROPHONE HAS FIREFLY ;IN-USE INDICATOR LIGHT; 5. 5 HOURS CONTINUOUS TALK TIME, 10 DAYS STANDBY SUBCATEGORY2: HEADSETS.