Shenzhen Welldy Technology Co. Limited X400 User Manual

60.0 mm

90.0 mm

User Manual

WATER

RESISTANT

T

RATING

IP67

450.0 mm

Only charge with devices rated and marked with 5V to avoid damage to the speaker. 

Do not open up the speaker, it voids the warranty and may damage the product. 

Rechargeable batteries have a limited number of charge cycles. Battery life and number of charge cycles 

varies by use and settings.

Never place the speaker close to high temperature heat sources.

To keep the warranty valid, never try to repair the product yourself.

1. Leather Lanyard

2. power button: Long press to power on/off, short press to 

    transfer the playing mode.

3. +: The multi-function buttons: Long press to next song, 

    short press to increase the volume.

4. -: The multi-function buttons: Long press to previous song, 

    short press to decrease the volume.

5. The multi-function buttons:play/pause/answer call

6. Interconnect  button, Please refer to the following 

    instructions for operation

7.TF card slot

8.AUX IN cable connection interface

9.USB charging hole

10.Charge indicator

11.Microphone hole

12.Bluetooth indicator

13.Charge indicator

Connect the supplied charging cable to the charge input and to a USB port on your computer or a USB 

charger. The charging LED is lit red during charging. The LED turns off when fully charged.It is recommended 

to charge 10 minutes before power on if you 7 days unused, then you can continue to use while charging.

A built-in rechargeable battery powers the speaker.

Power on: Long press power on the speaker, then the Bluetooth indicator light is on and you can connect 

                    Bluetooth devices.

Power off: Long press power on the speaker, and then Bluetooth indicator will turn off.

On your device search for Bluetooth devices. Select the speaker from the list. 

The speaker will give an indication sound when the connection is successful.

Only one Bluetooth device can be connected at the same time.

If you want to connect another device to the speaker, then first disconnect the current one.

On your device, disconnect the Bluetooth connection with the speaker.

Some Bluetooth devices support automatic reconnection, with those devices the speaker will automatically 

reconnect.

The speaker will not automatically reconnect on devices that does not support automatic reconnection.

Increase volume: Long press on the “+” button.

Decrease volume: Long press on the “- “ button.

Connect a microSD card and power on the speaker.

Power the speaker on.

Connect a 3.5 mm audio cable to the speaker and your device.

The speaker is now connected to your device.

Play / pause / answer incoming call / end call = short press on the MF-button.

Increase volume: Short press on the “+” button.

Decrease volume: Short press on the “- “ button.

Previous song: Long press on the “-” button.

Next song: Long press on the “+” button.

1. Connect your phone via Bluetooth, the speaker will play ringtones while a call coming.

2. Short press the multifunction key to answer the call on the speaker, you can talk to each other through 

    the microphone hole, after call ended, it will continue to play music.

3. Long press the multifunction key on the speaker to reject an incoming call.

4. When you connect your phone, press twice in rapid multifunction key to call back the last call by 

    telephone.

● 1pcs* X400 wireless speaker              ● 1pcs* Product manual

● 1pcs* Micro USB cable

● Model: OZ-X400

● Bluetooth: 4.2+EDR compliant

● Speaker: Ø40mm  4Ω  5W*2

● Built-in rechargeable battery: Li-on, 3.7V, 2200mAh

● Charging time: 2.5 hours

● Playing time: 18 hours

● Input: 5.0V      1.0A

● Product Size: 73*73*182mm

● Product Weight: 432g

● Range: Up to 10m

    IP67

1.        the symbol indicates: The product is only suitable for the safe non-tropical climates.

2. Note: Please use the same type or equivalent type of battery to replace if the battery is scrapped. 

    Otherwise maybe explosion occurs.

3. The lithium battery may be exposed such as fire or excessive heat.

1: Turn on both speakers

2: Press and hold the Play/Pause-button on one of the speakers for about 2 seconds until you hear a 

    “beep”sound.

3: Release Play/Pause button. It can take a few more seconds before speakers connect to each other.

4: Go into the Bluetooth menu on your smartphone and pair the speakers with your phone by selecting the 

    speaker model number . (it will only display 1 number which is both combined in to one)

When speakers are previously paired with each other: If they do not automatically pair with each other 

when you turn them on, press and hold the Play/Pause button on one of the speakers for about 2 seconds. 

It can take a few more seconds before the speakers connect to each other. 

If you are connected to both speakers without the TWS connection between them, then you have to 

disconnect from one of the speakers.

1. Press and hold the Play/Pause-button on one of the speakers for about 2 seconds until you hear 

    a “beep”sound

Solution:

(1) Please check whether the multifunction indicator light flashes blue. Please power on your speakers if 

      the light isn’t on. Please charge the speaker if the light is still not on.

(2) Please turn off the other Bluetooth devices, if there are many Bluetooth devices surrounding. This may 

      result in search difficulties.

(3) Restart wireless speaker on devices for Bluetooth search function.

Solution:

(1) View the distance between the player and the speaker has not been exceeded offective Bluetooth 

      connection distance 8-12meters.

(2) Ensure there is not any obstacle between the play device and speakers.

(3) Check the playback device or whether the speaker is in a low power state.

This product is designed with full attention for safety performance. To ensure safe operation, please follow 

the following rules:

1. Place the speakers in a stable position avoid fall and cause damage or personal injury.

2. Do not drop, disassemble, open, crush, bend, puncture, burn speaker.

3. Do not close to any heat source (such as radiators, heating equipment, stoves, or other heat-generating 

    equipment) where the use of speakers.

4. Please send professional maintenance staff to repair for any reason damage.

5. Before wiping with a dry cloth to clean the speakers, set the power switch to the off position and unplug 

    the power cord from the power outlet.

6. Health considerations, please adjust the sound to a suitable level.

This device complies with Part 15 of the FCC Rules. Operation 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. 

Changes or modifications not expressly approved by the party responsible for compliance could void the 

user's authority to operate the equipment. 

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 in structions, 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 an tenna. 

     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.

Disconnect other connected devices and then try again.

You can force a disconnection by moving out of

Bluetooth range (10 m).

Adjust the volume.

Make sure that your Bluetooth device is within range.

Ensure there is no obstacles in the way that can block/disturb the signal.

Check via the device’s Bluetooth connection if the speaker is connected with the device.

Move the device closer to the speaker or try removing

obstacles between them.

Recharge your speaker.

Reset your speaker.

Bluetooth Speaker

Product Name: Bluetooth Speaker
Model No.: OZ-X400
FCC ID: 2AL7B-X400

RF warning statement:

The device has been evaluated to meet general RF exposure
requirement. The device can be used in portable exposure condition

without restriction.