Huey Chiao HCB03 - Manual (Page 15)

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● If Call 1 is maintained and Call 2 is on line, quickly press the
function button to end Call 2 and renew Call .
18. Adjusting the Volume
During a call, you may adjust the Headset’s volume.
. To increase the volume, press the increase (+) volume key.
2. To decrease the volume, press the decrease (-) volume key.
Note:
● You will hear the “Du Du” sound while adjusting the volume up
to the loudest or lowest.
19. Safety instruction
. Read the Headset manual carefully and use the headset cor-
rectly by following the instructions.
2. Keep the Headset away from children, avoid children from
swallowing it accidentally.
3. Do not use the cleaning liquid or spray to clean the Headset.
4. Do not clean the Headset while charging it.
5. Do not disassemble the Headset. If you encounter a problem,
contact the retailer shop.