Found this online. Hope it helps you out.
Switching the headset on
To switch the headset on:
Press and hold the Play/Pause button for 2 seconds.
An ascending confirmation beep is heard in the headset and the LED indicates the current operating mode. Flashing in blue indicates that the battery charge status is OK; flashing in red indicates a low
battery (see page 6).
The LED flashes several times every second:
The headset is paired to one or several Bluetooth devices and tries to connect to one of these devices.
The LED flashes slowly (once every second):
The headset is paired to one or several Bluetooth devices. However, there is no current connection because the
Bluetooth device is switched off or out of range.
The LED flashes once every 3 seconds:
The headset is paired to one or several Bluetooth devices. However, there is neither an audio transmission nor an active call.
The LED is glowing slowly every 4 seconds:
The headset is paired to one or several Bluetooth devices, a sound file is received via A2DP and played back or
paused.
The LED flashes once every second:
The headset is paired to one or several Bluetooth devices and there is currently an active call.
If you switch on the headset and keep the Play/Pause button pressed for 5 seconds, the headset will go into pairing mode (see ?Pairing the headset? on page 9).
The LED flashes alternatingly in red and blue for up to 60 seconds:
The headset is not yet paired to any Bluetooth device. Pair it as described under ?Pairing the headset? on page 9.
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