LETSCOM 91WCJNFFHCL Wireless Earbuds User Manual

LETSCOM 91WCJNFFHCL Wireless Earbuds User Manual

Thank you for purchasing our products. This manual addresses the safety guidelines, warranty, and operating instructions. Please review this manual thoroughly before operating your device.

SAFETY AND WARRANTY

Important Safety

• The use of earbuds will impair your ability to hear other sounds. Use caution while using your earbuds when you are engaging in any activity that requires your full attention.
• If you have a pacemaker or other electrical medical devices, you should consult your physician before using this product.
• This package contains small parts that may be hazardous to children and should be kept out of reach of children. This product is not a toy – never allow children to play with this product. Always store the product out of reach of children. The bags themselves or the many small parts they contain may cause choking if ingested.
• Never try to dismantle the product yourself, or push objects of any kind into the products, as this may cause short circuits which could result in a fire or electric shock.
• None of the components can be replaced or repaired by users. Only authorized dealers or service centers may open the product. If any parts of your product require replacement for any reason, including normal wear and tear or breakage, please contact us.
• Avoid exposing your product to rain, moisture, or other liquids to protect against damage to the product or injury to you.
• Keep all products, cords, and cables away from operating machinery.
• If the product overheats, if the product has been dropped or damaged, if the product has a damaged cord or plug, or if the product has been dropped in a liquid, discontinue use and contact us.
• Do NOT use in areas where there are explosive hazards.
• Do NOT submerge the earbuds in water. Do NOT expose the earbuds to moving water (e.g., from a faucet, etc.).
• Do NOT wear the earbuds while showering or bathing, or when participating in water sports, e.g., swimming, waterskiing, surfing, etc.
• This product contains magnetic material. Consult your physician on whether this might affect your implantable medical device.

WARRANTY

We strive to build our products with the highest attention to detail and craftsmanship. However, sometimes there are occurrences of defects. We are happy to offer 1-year hassle-free warranty to all our products as we continue to make amazing wireless product. Please contact us if you have any questions about our devices.

Package Contents

• Wireless earbuds × 1 pair (left and right)
• Charging case × 1
• Eartips × 3 pairs (large, medium, small)
• Micro USB cable × 1
• User manual × 1

At a Glance

• Microphone
• MFB button (multi-function button)
• LED indicator
• Charging case
• LED indicator
• Micro USB charging port
• L (for the left ear, master earbud)
• R (for the right ear)
• Replaceable ear tips

Earbud LED Indicator Guide

• Power on: LED indicators stay blue for a second
• Power off: LED indicators stay white for a second
• Pairing mode (using both earbuds): LED indicator on the left earbud flashes blue and white alternately
• Pairing mode (using only one earbud): LED indicator on the earbud flashes blue and white alternately
• Connected to a Bluetooth device: LED indicators flash blue every 7 seconds
• Low battery: LED indicators flash white every 5 seconds and a voice reminder prompts every 2 minutes
• Earbuds are being charged: LED indicators stay white
• Earbuds are fully charged: LED indicators are off

Charging Case LED Indicator Guide
Earbuds are taken out of or put back into the charging case:

• 1-25% battery: LED indicator flashes blue once
• 25%-50% battery: LED indicator flashes blue twice
• 50%-75% battery: LED indicator flashes blue 3 times
• 75%-100% battery: LED indicator flashes blue 4 times

Note:
The charging case LED indicator is off when earbuds are being charged in the charging case.

The charging case is being charged:

• 1-25% battery: LED indicator flashes blue once every 2 seconds
• 25%-50% battery: LED indicator flashes blue twice every 2 seconds
• 50%-75% battery: LED indicator flashes blue 3 times every 2 seconds
• 75%-100% battery: LED indicator flashes blue 4 times every 2 seconds
• The charging case is fully charged: LED indicator stays blue

Using the Earbuds

Charge the earbuds
When you use the earbuds for the first time, remove the insulating films on the charging contacts of the earbuds.

1. Align the charging contacts on the right earbud with the charging pins on the right side of the case
   
2. Repeat step 1 to charge the left earbud.
3. Close the case when the earbuds’ LED indicators are solid white

Charge the charging case

1. Plug the small end of the USB cable into the Micro USB port of the charging case.
2. Plug the other end into a USB wall charger or computer (DC 5V) that is powered on.

Notes:

• It takes approx. 2 hours to fully recharge the earbuds.
• The earbuds and the charging case charge simultaneously. The charging case can be used as a standalone charger.
• When the charging case is out of power and you put the earbuds back into the case, the earbuds will not turn off automatically. Turn off the earbuds manually.
• When the earbuds are being charged in the charging case and the charging case is out of power, the earbuds will turn on automatically. To avoid unwanted power consumption, turn off the earbuds manually.
• When the charging case is out of power, the earbuds will not turn on automatically the time you take them out of the case. Turn on the earbuds manually.

Pair

Before pairing the earbuds with your phone or other Bluetooth devices, make sure that the Bluetooth version of your phone or other Bluetooth devices is 4.0 or higher.

Pair both earbuds (Pair use)

1.  Make sure the earbuds and your phone or other Bluetooth devices are next to each other (within 3 feet, with no obstacles between).
2. Turn on the Bluetooth of your phone or other Bluetooth devices.
3. Turn on the earbuds (when they are in shutdown state) and the earbuds enter pairing mode (the LED indicator on the left earbud flashes blue and white alternately).
4. In the list of found Bluetooth devices in your phone or other Bluetooth devices, choose “D39-L” to pair. 5) Enter “0000” if your phone or Bluetooth device asks you to enter a code to pair.

Notes: 

• The earbuds will directly enter pairing mode the first time you turn them on.
• The earbuds will connect to the last paired Bluetooth device automatically when they are turned on. Please turn on the Bluetooth of your Bluetooth device before turning on the earbuds.
• If pairing fails, turn off the earbuds first and then press and hold the MFB buttons until the indicator on the left earbud flashes blue and white alternately and the earbuds enter pairing mode. Choose “D39-L” in your phone to pair.
• When both earbuds are connected to your phone, if you put the right earbud back in the charging case, you can use the left earbud alone without interruption; but if you put the left earbud back into the charging case, the right earbud is also disconnected to your phone and you have to pair the right earbud with your phone again to use the right earbud alone.
• When the earbuds are on but not paired with your phone or other Bluetooth devices, they will exit the pairing mode and be automatically off in 10 minutes

Answer/hang up/reject calls

• Press the MFB button or operate on your phone to answer an incoming call.
• Press the MFB button or operate on your phone to hang up an ongoing call.
• Press the MFB button twice to reject an incoming

Activate voice control of the phone
In a paired state, press and hold the MFB button for 2 seconds. (This function works only when your phone has a voice control function; please refer to the instructions of your phone for details.)

Trouble Shooting

Q: Pairing failed.
A:

1. Put the earbuds back into the charging case and make sure that they are off.
2. Take the earbuds out of the case and they are automatically on.
3. Wait that the indicator on the left earbud flashes blue and white alternately and the earbuds enter pairing mode.
4. Choose “D39-L” in your phone to pair

If the pairing still fails, check the following points:

• Make sure the earbuds and your Bluetooth device are next to each other or within 3 feet and there are no obstacles between.
• There is no signal interference nearby (check the question “Connection is not stable” for signal interference conditions).
• Try to reboot your Bluetooth device.

Q: Earbuds are connected to phone A, but I want to pair earbuds with phone B when I am not able to disconnect the earbuds from phone A.

1. Turn off the earbuds by pressing and holding the MFB buttons for 4 seconds.
2.  Press and hold the MFB buttons until the indicator on the left earbud flashes blue and white alternately and the earbuds enter pairing mode.
3. Choose “D39-L” in phone B to pair.

Q: Power runs out fast.
A: The earbud’s playtime varies according to volume level and audio content. The following conditions may cause fast power consumption:

• When the charging case is out of power and you put the earbuds back into the case, the earbuds will not turn off automatically. To avoid unwanted power consumption, turn off the earbuds manually.
• When the earbuds are being charged in the charging case and the charging case is out of power, the earbuds will turn on automatically. To avoid unwanted power consumption, turn off the earbuds manually.

Specifications

• Model: D39
• Bluetooth Standard: V5.0
• Operating Range: 33 feet/10 meters (No obstacles between)
• Supporting Protocols: A2DP/HFP/HSP/AVRCP
• Charging Time: 2 hours (earbuds); 2 hours (charging case)
• Talk/Playing Time: about 3 hours (Varies according to volume
• level and audio content)
• Charging Voltage: DC 5V
• Battery Type: Li-polymer
• Battery Capacity: 50mAH (earbuds); 480mAH (charging case)

REFERENCE LINK