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Legal notice 

Trademarks and permissions: 

HTC and the HTC logo are trademarks of HTC Corporation and used under 
license by Water World International Industrial Limited. 

The Bluetooth® word mark and logos are registered trademarks owned by 
Bluetooth SIG, Inc.  

Copyright © 2022 Water World International Industrial Limited. All rights 
reserved. 

THIS DOCUMENT IS FOR INFORMATION PURPOSES ONLY, AND DOES 
NOT CONSTITUTE ANY KIND OF WARRANTIES. 

 

 

FCC Warning 

FCC ID: 2AVFE-HTCTWS4, only for left earbud 

This device complies with Part 15 of the FCC Rules. Operation is subject to 
the following two conditions: 

(1) This device may not cause harmful interference.  

(2) This device must accept any interference received, including interference 

that may cause undesired operation.  

NOTE:  

  This equipment has been tested and found to comply with the limits for a 

Class B digital device, pursuant to part 15 of the FCC Rules. These limits 
are designed to provide reasonable protection against harmful 
interference in a residential installation. This equipment generates uses 
and can radiate radio frequency energy and, if not installed and used in 
accordance with the instructions, may cause harmful interference to radio 
communications. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause harmful 
interference to radio or television 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. 

Summary of Contents for TWS4

Page 1: ...d not be used in extreme temperatures Before using the charging case for the first time make sure to charge it using a 5 volt charger Pairing HTC True Wireless Earbuds 1 with your phone 1 The earbud will turn on automatically when taken out of the charging case 2 On your phone go to Settings turn Bluetooth on and then pair with HTC TWS4 Check your phone user guide to find out how to access Bluetoo...

Page 2: ...Recharge the case with a 5V charger periodically Controls Power on off Earbud will turn on when removed from the charging case and turn off when it is put back in the case Play next Tap and hold the earbud for 2 seconds Play previous Tap and hold the earbud for 5 seconds Play Pause Tap earbud Answer call End call Tap earbud Decline call Tap and hold earbud for 2 seconds Assistant Triple tap earbud...

Page 3: ...d 3 charges Earbud battery capacity 45 mAh Charging case battery capacity 400 mAh Charging case input voltage 5V Charging interface USB Type C Charging case power input rating 5V 320 mA Net weight single earbud 4 g Net weight both earbuds with case 43 g Checking product authenticity 1 Scan the QR code on the package with your phone 2 Scratch off the coating You ll then see a code ...

Page 4: ...ur phone enter the last four digits of the code 4 If the code is authentic the Search results screen will show that you have a genuine product code Warning If you see the above screen beware of counterfeiting ...

Page 5: ...t may cause undesired operation NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance...

Page 6: ...that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment ...

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