High Quality Bluetooth Block Speaker Box

Package Contents

Block speaker *1
Micro USB charging cable *1
Micro USB  to 3.5mm audio cable  *1
Welcome Guide  *1

Product Model
a

How to Turn ON / OFF the Speaker

Press the power button for 2 seconds to turn the speaker on or off.

How to Pair with Your Device

1. Press the power button for 2 seconds. The speaker will turn on and automatically enter pairing mode indicated by the flashing blue LED.
2. Activate your device's BT function and search for the device.
3. Once the speaker has been detected, select the product name "ZF-510" to connect.
4. When the wireless speaker and your device are successfully paired, the blue LED will go on and remain on while connected.

* Block speaker will automatically turn off after 20 minutes if no device is connected.
*Double click power button, disconnect bluetooth, re-enter the pairing mode.

How to Recharge

When the speaker's battery is low, the speaker will announce "toot", and the red
battery indicator will flash for about 10 minutes.
 

Plug the Micro USB cable into the speaker's Micro USB charging port.

2. Insert the remaining end of the USB power wire into a USB AC adapter(not included) connected to a wall socket, or a charging computer USB port.A steady red battery indicator will show that it is charging.
3. The red battery indicator will go off when the speaker is fully charged

* Do not charge near water.

LED Indicator Instructions


Specifications

Model: BT-521
Version: 4.0
Weight:93g
Size:52.5*52.5*47mm
Battery Capacity:1000mAh, 3.7V
Play Time:7 hours
Charge Time:3-4 hours
Input:5V / 1A
Operating Range:33ft / 10m
Speaker Output Power:3W
Supported Profiles: A2DP, AVRCP
FAQ and Solutions

1. Why can't the speaker connect to my device?
a. Check to ensure your device's BT function is enabled.
b. Make sure your device is within 3ft/1m of the speaker.
c. Delete the pairing record(s) on the speaker or your device.

2. Can I use the speaker to play music while charging?
To protect the long-term performance of the battery, it is better to charge it when the speaker is turned off, especially when the battery is low.

3. Can I make or answer phone calls through the speaker?
No. The speaker does not feature a built-in microphone.

Notice

1. If you cannot turn on the product for the first time, may be because the battery is low. Please try again after fully charged.
2. Please keep the speaker shut down after use. It helps to increase the battery service life.
3. It is recommendable to fully charge the battery for the first time.
4. Make sure the battery is fully charged if not regularly used.
5. Do not place the speaker in high temperature that is above 45ºC or exposed to sunshine, as it will result in an explosion.
6. Do not attempt to dismount;
7. It may result in damage to the speaker if the input voltage is too high; and the speaker will fail to work if the input voltage is too low.
8. Low battery shall cause auto turn off the product or a decrease of the volume. Charge the battery to fix the problem.
9. The operational range of the speakers may be influenced by obstructions, such as walls, pillars, etc. To ensure a stable connection, we recommend avoiding such obstructions whenever possible and/or shortening the distance during use.

CAUTION: Risk of electric shock
Misuse, this device battery may cause a fire or chemical explosion.
Environment-friendly recycling
Do not dispose of electrical devices or accessories with your household waste.
In some countries or regions, collection systems are set up to handle electrical and electronic waste items.
Contact your regional authorities for more details.

Packing parameter
Qty:56 PCS
CTN SIZE:43.5*40.7*24.3cm
Gross Weigh:11.4KG