Shenzhen Quansheng Intelligent Electronics F40 Twins True Wireless Earbuds User Manual

**Shenzhen Quansheng Intelligent Electronics F40 Twins True Wireless Earbuds

**

Specifications

Real wireless connection (TWS)to realize wireless stereo ieft and right channel separation, HIFI sound. Left and right ear are complete with bluetooth function, can be used alone also can be used in pairs.

(Support incoming call number IOS system power display)

Bluetooth pairing

1. single ear connection: long press the multi-function button, release the button, at this time, red and blue lights alternately flashing, open the phone, Bluetooth cansearch for connection, also can support any other Bluetooth device connection. After the connection is successful, you can listen to music or make a phone call.
2. ears(TWS)and connection: long press the multifunction key two headset, and the double-click on either side of the multifunction key to enter the TWS pairing state, while the corresponding tone, when only the blue light flashes slowly when representing TWS connection.

Note: calls only supports unilateral bluetooth headset, shutdown, play and pause can be made of any one of the connected headphones multifunction button control, another headset will synchronous control. The next time ling press the multifunction button will auto connect.

Bluetooth usage

1. make a phone call.
   When the headset is switched on and connected to the phone or a Bluetooth device with the call function, the call can be made. When you dial the phone, only one headset works. When the phone headset, there will be calls to remind and telegram, a short press the switch button to answer the call, if )IOU do not want to answer a ca II can quickly press the two key switch {call blocking function). In the case of fast play music by the  two key switch machine, mobile phone will be allocated in the last outgoing call(last number redial).

2. listen to music.
   When the headset is turned on and connected to the phone or Bluetooth enabled Bluetooth device, you can open the player and listen to the music In the process of listening to music, press the button once, pause the current music, and play the music which has been spended on short time.

3. power off. ·
   When you do not need to listen to music. you can press the switch button until there dlightison Then the Bluetooth this turned off. lf the bluetooth is away from the bluetooth device, or if the bluetooth device exits or shuts down, the bluetooth will automatically shut down after five minutes.

4. charge.
   recharge the Bluetooth battery. When charging, the red light will always turn on and the red light will be turned into a blue light after charging.

Note: headset will be forced to shutdown even when the headset is or 5. Language prompt.
Headphones in red and blue lights flashing in the matching mode, long press the headset main buttons, when they hear the headphones in English/Chinese prompt says it has successfully switch(switch to support Chinese/English)

Compatible with

105 & Android devices

Matters needing attention

1. do not treat this product with violet Objects, so far away from the high tern.
2. away from WIFI and routers and other high frequency transmitter equipment, this will affect the local signal reception resulting in sound card breaking and disconnection.
3. please use this product in a valid environment(10 meters),and do not have entity blocks(such as walls, etc )between Bluetooth devices and headphones.
4. this product can be connected to any Bluetooth enabled device.

FCC Statement

This device complies with part 15 of the FCC Rules. 0peration is subject to the following 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. 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 .
• 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.

Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. RF Exposure Information
The device was evaluated to meet general RF exposure requirements. This equipment should be installed and used with a minimum distance of 0 mm between the radiator and your body.

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