The Enthral S9 bluetooth headset does not need password to connect. If it asks for password, as shown in the image follow the steps below:-
Step 1
This may have happened if the bluetooth headset is not charged. Please charge the headset with the USB given in the box.
Step 2
Let the headset get fully charged for atleast 2-3 hours and then press the power button for 10 seconds.Step 4
Follow the steps from here to connect the headset to your phone.