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VF560 phone headset Product Features North grace VF560 phone headset 45 degree bevel design, make your operation more convenient, more direct angle; anti-noise microphone, allowing you to experience the high-definition voice communications. Telephone Headset Features: High-definition voice communication, anti-background noise headset comfortable, durable and convenient and practical headset cradle 30 16 Caller ID FSK and DTMF caller ID Now, when you use the backlight automatically detects the instruction, call ringing, backlight blinking indicating headphone volume adjustment: 2 files toggle adjustment and 2nd soft adjust the ringing tone volume control on or off MUTE choose intelligent conversation, and there are no external power supply LED indicates, can use a headset standard For600