About Logitech Zone Wireless Plus Headset LEDs

Your headset has an LED that indicates power, battery status, and connection:

LED	Status
Solid white light for two seconds then dim	Headset Power on
Solid white light for thirty seconds then dim	Headset is paired to the device
Solid white light (when in use)	Powered on and connected
Solid white light (when charging)	Fully charged
Breathing white light (when charging)	Battery charging
Red light	Low battery
Fast pulsing white light	Bluetooth pairing mode
Slow pulsing white light	No connection to dongle or device

The receiver for your headset also has an LED.

NOTE: It only indicates status for the headset, not for mice and keyboards.

LED	Status
Fast pulsing white light	Pairing mode
Solid white light	Connected or in a call
Repeatedly pulsing white light quickly three times then off for two seconds	Incoming call
Solid Red	Mute