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To increase speaker volume, press the top volume button repeatedly until you reach the desired volume level. 

To decrease speaker volume, press the bottom volume button repeatedly until you reach the desired volume level. 

Making and Receiving Calls 

Your headset supports both hand free and headset profiles. 

Accessing call functions depends on which profile your phone supports. 

Note: 

Some phone do not support all features listed. See your phone user’s guide you can activate call functions for the Handsfree profile according to the 

following 

 

Using Your Headset Indicator LED 

With charger plugged in: 

Headset Indicator 

Status 

On Charging 

in 

progress 

Off Charging 

complete 

 

 

With no charger plugged in: 

Headset Indicator 

Status 

Off Power 

off 

ON (Steady) 

Pairing mode 

10 rapid flashes 

Pairing successful 

Flashes at a 3-second interval 
(1.

 

seconds ON 

2.9 seconds OFF) 

Standby (not on a call) 

Pulses at an 8-second interval 
(2.0 seconds ON 
6.0 seconds OFF) 

Connected (on a call) 

Note: 

When the wireless headset is paired to the phone and there is no activity for 5 minutes, the blue flashing LED turns off, any button press on the headset, 

resets the timer and the flashing resumes. If you press the up and down volume buttons at the same time during a call the pulsing LED turns off for the duration 

of the call.   

Audio Tones 

Audio Tone 

Headset Status 

Single high tone when pressing volume 
button 

Volume maximum or minimum reached 

Five rapid high tones, repeated every 20 
seconds 

Low battery 

No audio indications, deteriorating audio 
quality 

Out of range 

Series of 4 tones, low to high 

Audio link open (headset mode).   
Active call (hands free mode) 

Ring tone 

Incoming call 

Single high tone 

Pairing confirmation 

Single low tone 

Initiate voice activation 

Dual high/low tone 

Voice tag not recognized 

Single high tone 

End call 

Series of 4 tones, high to low 

Audio link closed (headset mode) 
Call ended (hands free mode) 

Fast high/low tone every 5 seconds (max 
& min. volume confirm beep) 

No network/service 

No tone 

Power ON/OFF 

 

Troubleshooting 

* When the Bluetooth headset can not connect with the handset. Please do follow operation: 

1. Make sure the Bluetooth headset was turn on and was paired with the handset.  

2. The Bluetooth function was startup. 

3. The distance between handset and Bluetooth headset no over 10M, or there are some stumbling block between the 

Bluetooth headset and handset like wall or other electron equipments. 

4. The paired Bluetooth list was full in the message. One Bluetooth headset

 

can be linked up (or "paired") with up 

to 8 devices

.

 Please pair the headset again when the paired handsets was full. 

* When the headset can not connect with the selected handset automatically.  

Please use the charger to plug in again or turn off the power and 

pair it again.  

 
 
 
 

Summary of Contents for UT-H21

Page 1: ... handset Multifunction control button MFB z Use voice activation to make calls Headset Features Headset Top View Headset Button View 1 Charging Port accepts the plug for your headset battery charge 2 Volume control buttons Adjusts speaker volume up to down 3 Multifunction Button controls multiple headset function 4 Ear hook 5 Hand strip hole 6 Speaker Plays the sound you receive on the call 7 Volu...

Page 2: ...tery provides approximately 8 hours talk time 160 hours standby time Wearing Your headset Attention Mustn t to wear the headset like this That is mobile phone and the headset must be in the same way Or maybe cause noise and interference When packaged the headset is configured for ware on the right ear Step 1 Open the ear hook follow the arrowhead point 2 Loop the ear hook over your ear 3 Point the...

Page 3: ...3 seconds until the LED flashes rapidly Pairing Your Headset and Phone Note You must pair your headset and phone before you can make a call Pairing creates a link between devices with Bluetooth wireless technology and allows the phone to remember the headset s unique ID When your headset and phone are paired your headset automatically connects to your phone Pairing With the headset and phone close...

Page 4: ...or the duration of the call Audio Tones Audio Tone Headset Status Single high tone when pressing volume button Volume maximum or minimum reached Five rapid high tones repeated every 20 seconds Low battery No audio indications deteriorating audio quality Out of range Series of 4 tones low to high Audio link open headset mode Active call hands free mode Ring tone Incoming call Single high tone Pairi...

Page 5: ...elevision reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the de...

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