Yamaha TW-E7B Noise-Canceling True Wireless In-Ear Headphones (White) - Manual (Page 34)

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Auto power-off timer
Sets the time it takes for the power to turn off after Bluetooth has been disconnected.
Settings
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OFF (default setting)
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5 minutes
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30 minutes
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1 hour
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3 hours
NOTE
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The AMBIENT SOUND does not guarantee that you will be able to hear everything. You may be unable to hear ambient sounds if
you’ve turned up the volume of the audio, or in certain situations.
( When using GAMING MODE, the video/audio latency may change or the sound quality and connection stability may degrade,
depending on the usage environment and how you wear the product.
Menu screen
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Check for firmware update
Checks whether new firmware has been released, and performs updates.
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User Guide
Accesses the User Guide
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Google Analytics
Displays information regarding Google Analytics.
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Dedicated Application > App settings