Jazooli not pairing with kokkia sender

Look into this link to see if they have one.
https://www.manualslib.com/

Hold it firmly an unscrew the back. It comes right off. Inside you will find a plastic battery holder. Place the correct size battery into each slot. I believe there are three either AA or AAA batteries.

Do the 2 units pair up when you switch on ? If they do try swapping the units to see if the problem changes from one helmet to the other.
If it does then the problem is with one of the units, if it stays with one helmet then it may be a wiring problem to the speakers.If they dont pairup when you switch on try re-setting the pairing and start again. With the unit turned on, press and hold the CTRL button for 6 seconds till the light flashes red then blue rapidly then press the volume up button for 3 secs, the red/blue should flash 5 times to confirm reset done. Then re pair the units for intercom, switch both units on, when they are flashing slow blue on one unit press the CTRL and Intercom Buttons simultaneously for 6 secs so the red light flashes rapidly, repeat for the 2nd unit, they should both go to a solid red light within a few seconds then slow flash blue to show they have paired for intercom use. If this does not cure the problem you will probably have to send the units for repair.
Hope this helps
Tim

When the afterglow headset flashes from red to blue, it is in pairing state, youve held the power too long after power-on. Shut it off again and turn it back on and dont hold the power button untill it flashes red to blue. The directions provoded with it aare quite easy to follow. Took me 30 seconds to set mine up

You want to turn off the power to your headset and turn off your phone. Remove for 30 seconds the battery from the phone and reconnect. Then follow the pairing instructions found on pages 4-5 in this link for the Plantronics Voyager Pro+.

Good luck from Headsets Direct!

Put your bluetooth on your phone..
On the supertooth is a green button..press and hold to turn on for around 5 secs and watch for red and blue lights to flash..its pairing mode..now activate phone discoverable. .and pair..enjoy

The following are for TB-20EL model. But it works in general for plantronics as well. For step 3 make sure your headset is in pairing mode. When you hold the button 6-8 sec, it should turn either solid blue or blink.
for tb-20el:
1. ensure that your phone's bluetooth feature is on
2.Ensure that the headset is off(press and hold button on your headset (called multifuntcion button) for 2-4 sec, teh indicator light will flash red)
3. press and hold the multifunction button for 6-8 seconds until the indicator light alternately flashes blue and red
4. set your phone to find new device
5. Ente rpin '0000' (four zero) then press OK or yes
6. this should complete the pairing.

1. Turn headset off (panel 5).
2. Hold down the headset’s MFB until the red and blue lights
flash and you hear 2 rising tones, followed by 4 more tones.
Important: Wait for all tones and for both lights to flash. This
may take up to 15 sec. Release the MFB.
3. Follow the manufacturer’s instructions for putting your
cellular phone into Bluetooth discovery mode.
4. Wait 5-15 sec. while the devices discover each other.
When the phone discovers the headset, select “Pair” and
enter a passcode of 0000 when instructed. When pairing
is complete the headset’s blue light will stop flashing and
the phone will prompt you to ‘connect’ to the headset.
Enter “Yes” on the phone to connect to the headset. When
connected, the blue light will flash indicating that the
headset is in standby mode ready to receive a call.

USER GUIDE

The following procedure will re-establish the communication link between the Headphones and the Wireless adapter, this is called "pairing". Before you start please make sure both the headphones and the wireless adapter are fully charged and turned off.
Note: The headphones and the wireless adapter come pre-paired from the factory.
1. Press and hold the power button on the headphones. See Figure 1.

Figure 1

2. Continue to hold the button down until the LED starts flashing red/blue in an alternating pattern. Release the button when the LED starts flashing red/blue. See Figure 2.

Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.

Figure 3
4. Hold down the button until the LED starts flashing red/blue in an alternating patter. The LED will blink blue, then turn off for a few seconds then blink red/blue. Release the button when the LED starts flashing red/blue. See Figure 4.

Figure 4
5. Once both the headphones LED and the adapter LED is blinking red/blue, press the volume up button once on the headphones. See Figure 5.

Figure 5
Once the headphones is paired with the adapter, the LED on the headphones will blink blue once every two seconds. See Figure 6.

Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.

Figure 7
The adapter may continue to blink red/blue for a few seconds even after the headphones LED starting blinking blue. This is normal; the adapter may take a few additional seconds before the LED turn solid blue.
Once the headphones and the adapter are paired, it is not necessary to pair them again even if the batteries on both units are completely drained.
Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.

I had a similiar problem... I had to replace my bulb, which means $$$!