Dongguan Pure Audio Technology 4U Series Bone Conduction Bluetooth Headphones Instructions

Dongguan Pure Audio Technology 4U Series Bone Conduction Bluetooth

HeadphonesProduct Structure

• Status Indicator
• Off Button
• Type-C Charging Port
• Touch Area (right ear)
•  MIC Location
• Light Perception (right ear)

Note: All kinds of pictures in this manual are schematic diagrams,which may deviate from the actual objects. Please refer to the actual objects.

Features

Pairing

| Waiting for

connection

| Earbuds will automatically

enter Bluetooth Pairing.

| Slow flashing red

and green lights

| pairing
Connection

Success

| Select “UBF 4U” in device

settings to connect

| Green light flashes

once every 3 seconds

| connected
Disconnect| Turn off bluetooth from any

previously connected device.

| Blinks Green| disconnected

Call

| Answer/

end call

| Single tap on right bud| –| –
Refuse call| Press & hold 2 sec seconds on right bud| –| –

Music

| Play| Double tap on right bud| –| du du
Pause| Double tap on right bud| –| du du
Play Next| Triple tap on right bud| –| du du du
Volume up/ down

way1 or 2

| Press & hold 3 seconds on right bud

and say “volume up/volume down”.

| –| –
Adjustment by phone| –| –

Battery

| Low battery| 3.3v low battery prompt,

30 seconds prompt once.

| The red light turns on

once every 10 seconds

| battery low
Charging| After plugging in the Type-C charging

cable, the headset will shut down.

| Solid Red| –
Full charged| –| Solid Green| –
Smart Wear Detection| Auto shutdown if not work for

more than 10 minutes

| Blinks Red| power off

Restore settings

| After turning on the phone, long press and touch for 10 seconds to restore setting (can not be linked to the phone Bluetooth).|

–

|

du du du du

Call Voice Assistant| Press & hold 3 seconds on right bud| –| du du
Headset multipoint connection| This headset supports two devices (devices that have been connected to the headset) and when the device that is playing is paused, it will automatically switch to the other device that is playing.
Model No : 4U

Bluetooth Version : 5.0 Channel Stereo| Wire Range : 10 Meters / 33 Feet
Frequency Response : 100 Hz~20 KHz| Bluetooth Response : 2.402-2.480 GHz
Impedance : 8Ω| Speaker Driver : Ø14.0mm BCT
Microphone Sensitivity : -40 dB±2 dB| Weight : 28.5g
Battery Capacity : 150 mAh| Battery : 2C Fast charge lithium battery
Play Time : About 6 Hours| Charging Time : About 1 Hour
Button Style : Button+Smart Touch| Wearable Detection : Support
Electrical Specifications : 5V / 1A| Waterproof Level : IP55
Compatible Profiles : HFP 1. 7,HSP 1. 2, A2DP 1. 3, AVRCP 1. 6
CMIIT ID :

FCC Warning Statement

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the eguipment. This eguipment 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 residentia installation. This equlpment generates uses and can radiate radio frequency enengy 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 perticular 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 eguipment and receiver.
Connect the eauipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radiotv technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference, and
• this device must accept any interference received, including interference that may cause undesired operation.
  The device has been evaluated to meet general RF exposure requirement.

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