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 FCC ID: 

2ADTFS91

TWS Bluetooth 

Earbuds User 

Manual

Summary of Contents for S91

Page 1: ...FCC ID 2ADTFS91 TWS Bluetooth Earbuds User Manual ...

Page 2: ...nvironment Below 10 degree centigrade or Above 45 degree centigrade 4 Extreme temperatures can cause deformations reduce the charging capacity of the device and shorten the service life 5 Do not use wet equipment liquid which can cause severe damage to equipment 6 Please do not use wet hand operating equipment equipment damage caused by water does not under the warranty scope 7 If the earbuds play...

Page 3: ...the prompt DuDu this confirms that the earbuds are synced Once pairing between 2 earbuds a blue and red light will start to flash in the left earbud and a blue light flash in the right earbud Step 3 Go to the Bluetooth connection list on your smart phone or tablet and search for T31R Bluetooth name on your device Click to connect Both earbuds flash blue light indicating that the earbuds are connec...

Page 4: ...buds to automatically power on If the case is not charged the earbuds can be manually turned on Manual Power On Press and hold the main button on the and earbud at the same time for about 3 seconds to power on A blue light will on and begin to flash on the earbuds followed by a Power On message through the earbuds Auto Power Off Place the earbuds back into the case and close the lid Once they are ...

Page 5: ... button could play or pause music playing Music Next Previous Double press the main button of earbud to go to the next song Double press the main button of earbud to go to the previous song Answer Call During incoming call once press the main button of or earbud once to answer a call End Call During a call once press the main button of or earbud to end a call Reject Call During an incoming call do...

Page 6: ...low by a Low Battery message through the earbuds Low Battery Shutdown When the earbuds run out of battery power they will automatically shut off Automatic Connection After the initial set up and connection the earbuds will automatically connect to your device next time you turn them on Please ensure the Bluetooth is active on your device for automatic connection ...

Page 7: ...s both earphones can be restored to Factory Settings with alternating red and blue lights flashing on both earbuds Then the earbuds can be reused by auto or manually power on off Note This function is suggested to be used when the earbuds can t connect to each other under the conditions of common use ...

Page 8: ...ging earbuds will flash red lights until fully charged Once fully charged the red light will turn off Case Power Indicator 100 Power 75 Power 50 Power 25 Power Note The normal Charging Case holds 400 mAh of battery power which can charge the earbuds up to 3 times from no battery power before the case has to be charged ...

Page 9: ...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 i...

Page 10: ...ures 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 dealer or an experienced radio TV technician for help Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to...

Page 11: ...two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation ...

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