Description: The call center phone equipped with noise canceling microphone, it can increase the voice clarity for superior high quality sound. Connects to existing standard telephone jack, not need any batteries. Durable construction and rigid design for greater longevity. The call center headset allows you to speak and listen without holding the handset, thus increasing work efficiency. FSK/DTMF dual system auto switch. Flexible headband, free stretchable for greater comfortable wearing. Durable, suit for 7x24 hours high frequency using. Specification: Color: Black Material: ABS FSK/DTMF caller ID display, automatic checking 30 incoming, 5 outgoing number memories 2 digits PABX code setup 32 digits pre-dial and edit Green Backlight in-use With LED indication Flash and Mute function Headset speaker volume control by knob Ringer volume hi-low-off adjustable Flash time 100ms or 600ms choice Power save function Package Includes: 1 Piece Telephone 1 Piece Headset 1 Piece Headset Stand 1 Piece Cable