FSK/DTMF caller ID display, automatic checking 30 incoming and 5 outgoing number memories 2 digits PABX code setup 32 digit pre dial and edit Green backlight in-use 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 Noise Cancellation Headset Name: x-Lab Headset Telephone Brand: xLab Model: xHT500 Function: ● Headset ● Caller ID ● 35 call log Remarks: Headset speaker volume control by knob Country of Origin: Nepal Made in: Nepal Brand XLAB SKU XL278EL0K1UVSNAFAMZ-141954 Model xHT500