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Jabra BT121 Bluetooth headset

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7. Pair it with your phone

Headsets are connected to phones using a procedure called pairing. 
By following a few simple steps, a phone can be paired with a headset 
in a matter of minutes. 

 (See figure below).

1.  Put the headset in pairing mode

 

• When you turn on your Jabra BT121 for the first time, the headset will 

 

  automatically start up on pairing mode - i.e. It is discoverable for your 

 

  phone. When the headset is in pairing mode the LED is constantly lit.

2.  Set your Bluetooth phone to ‘discover’ the Jabra BT121

 

• Follow your phone’s instruction guide. First make sure that Bluetooth is 

 

  activated on your mobile phone. Then set your phone to discover the

 

  headset. This usually involves going to a “setup”, “connect” or “Bluetooth” 

 

  menu on your phone and selecting the option to “discover” or “add” a 

  

Bluetooth 

device.*

3.  Your phone will find the Jabra BT121

 

• Your phone will find the headset under name “Bluetooth headset”. Your 

 

  phone then asks if you want to pair with the headset. Accept by pressing

 

  “Yes” or “OK” on the phone and confirm with the passkey or PIN=0000 

 

  (4 zeros). Your phone will confirm when pairing is complete.

3. What your new headset can do

Your Jabra BT121 lets you do all this (dependent on your phone 
supporting the function):

 • 

Answer 

calls

 • 

End 

calls

 • 

Reject 

calls*

 • 

Voice 

dialing*

 

• Last number redialing*

 • 

Call 

waiting*

 

• Place call on hold*

* Phone dependent

Specifications

 

• Talk time up to 8 hours/standby time up to 170 hours

 

•  Rechargeable battery with charging option from AC power supply, PC via 

USB cable or car charger (PC USB cable and car charger sold separately)

 • 

Weight 

1

/

2

 oz (14g)

 

• Operating range up to 33 feet (10 meters)

 

• Headset and hands-free Bluetooth profiles

 • 

Bluetooth 

specification 

(see glossary page 10) 

version 2.0

4. Getting started

The Jabra BT121 is easy to operate. The answer/end button on the headset 
performs different functions depending on how long you press it.

5. Charge your headset

Make sure that your Jabra BT121 headset is fully charged for 2 hours before 
you start using it. Use the AC power supply to charge from a power socket. 
Connect your headset as shown in fig. 2. When the light indicator (LED) is 
solid blue, your headset is charging. When the solid blue LED light turns off, 
it is fully charged. 

 (Follow step 1-2 in fig. 2).

6. Turning your headset on and off

 

• To turn on your headset press the answer/end button until you see a 

 

  burst of blue flashes on the indicator light (LED)

 

• To turn off your headset press and hold the answer/end button until you 

 

  see a burst of blue flashes on the indicator light (LED)

Instruction: 

Duration of press

Tap Press 

briefly

Press 

Approx: 1 second

Press and hold 

Approx: 5 seconds

In case of unsuccessful pairing, put the Jabra BT121 into pairing mode 
manually. Make sure the headset is off . Press and hold the answer/end button 
for approximately 5 seconds until the LED has a constant light. The LED will 
fl ash before the light is constant – keep holding down the button until light is 
constant.

* Phone dependent

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