Rambo Industrial Limited R1615 ユーザーズマニュアル

Specially designed for sports enthusiast, 
the perfect music partner for sports an 
running.

User manual

Thank you for choosing us. Our Bluetooth headset has a fashionable design, powerful 
functions, and high compatibility, providing you with true hands-free convenience when 
making calls and listening to music! It is your best choice in office and during traveling and 
driving!

During call communication, click MFB button with a voice of “Refuse” to 

hang up the call

When a call is coming, long press MFB button for 1 second 

to reject the incoming call.

 During call communication, long press MFB for one second with a beep 

to transfer the call line to cell phone. 

When a call is incoming, it will auto read incoming phone number. Click 

MFB button once to answer the call.

 Under standby status after connection, double 

click Volume+once with a beep to re-dial the last called phone number.

 If the headset exceeds the allowed distance you will hear a voice 

of “Set Disconnected”, and then it will enter into pairing mode with a voice of “Pairing”. 

4. A fully charged battery can provide about 4 hours of talk time, or 100 hours of standby 
time. The actual talk time and standby time may vary with different cell phones, settings, 
use methods, and environment. 

Click Volume+ each time, the volume will be increased for one level. You 

will head a sound of Max volume when the volume is increased to maximum.

Click Volume- each time, the volume will be reduced for one lever. You will 

head a sound of “Min Volume” when the volume is reduced to minimum. 

When you are listening to music, long press volume + to previous song. 

When you are listening to music, long press volume - to switch to next song.

Three-party calling: 
1) when a new call is incoming during call communication (call A), short press MFB once 
to end the current call and answer the new call (call B). 
2) When a new call is incoming during call communication (call A), long press MFB about 
one second to reject Call B and recover call A.
3) When a new call is incoming during call communication (call A), double click MFB once 
to keep call A and answer call B. Repeat double click MFB once again to switch Call A/B. 

Fully charge the headset before using. For charging details, please refer to “Charger and 
Battery” in this manual. Meanwhile, choose the compatible cell phone or other Bluetooth 
devices for pairing. For details about pairing, please refer to ”Basic Operations”

Keep the headset away from your credit card or other magnetic storage media; 

otherwise, the stored information may be lost due to demagnetization.

 Long press MFB about three seconds for powering on, you 

will head a voice of “power on” the red and blue lights flashing alternately, and pairing.

After successful pairing, you will hear a voice of “Pairing Success”. After 

successful connection, you will head a voice of “Set Connected”. For cell phones with 
version lower than 2.1, you need to input a paring code “0000”.

With the Bluetooth wireless technology, you can connect the headset to relative 
compatible communication devices without cables. The Bluetooth wireless connection 
allows you to use a cell phone without holding it face to the headset, but the maximum 
distance between them shall within 10 meter(about 30 feet). The Bluetooth wireless 
connection maybe interfered by obstacles(such as walls) or other electronic devices.

We provide the “repair, replacement and return warranties”
(“3Rs-Warranty”)service to all products strictly according to national laws and regulations, 
and the warranty period is one year.
We do not directly provide the return and replacement services.
If you find any quality problem when using our products, please contact your local 
distributors as soon as possible for timely replacement. The after-sales services is not 
provided for the following cases:
1. The fragile label is altered or torn up.
2. The product is damaged due to contact with liquid or water.
3. The cover or other components of the product are seriously distorted due to external 
forces.
4. The product is damaged due to improper operation or storage.
5. The product is damaged due to an accident or negligence.
6. The product is damaged due to commercial use of the product in abnormal conditions.
7. Any other situations similar to the preceding ones.

1. To extend the services life of the battery, you are advised to charge the headset at least 
once a month.
2. Please use the charger provided by company to charge the headset. User of other 
low-quality charger may bring about danger.
3. Adjust the volume to an appropriate degree when using the headset. 
4. DO NOT wear the headset when sleeping; otherwise, the headset may be damaged or 
cause injuries to you.
5. When driving, you are advised to use the company Bluetooth headset to ensure your 
driving safety. It is dangerous to directly use cell phones when driving.
6. Keep the headset away from kids. Small components of the headset may cause 
suffocation or other injures to kids.

In some areas, maybe there are some limitations to use Bluetooth wireless technology. 
Please consult your local authority or service provider for details. 

Press MFB and volume- simultaneously about three 

seconds with a voice of “Removal Successful”

At any status, long press the MFB three seconds and the red light flashes. 

 At standby status after connection. Long press MFB 

button about one second until you head a beep. Repeat the action once to cancel the voice 
control.

Multi-point function: 
1)Connect the Bluetooth headset with cell phone A, and then close Bluetooth function of 
cell phone A. 
2)Connect the Bluetooth headset with cell phone B. 
3)Open Bluetooth function of cell phone again, then the headset will auto connect cell 
phone A for manual connection. Now the Bluetooth headset already connected cell phone 
connects two cell phones.

Double click Volume- once. 

After power on, headset will auto connect the previous connected 

cell phone once. You will head a voice of “Set Connected” after successful connection.

After connecting to USB charging cable, red light will keep flashing with 

a voice of “Power off”. 

Before using any charger to charge this headset, check whether the specifications of the 
charger meet requirements. The recommended output voltage is DC5V+/-0.25V, and the 
recommended output current is 100mA to 500mA. An over-high charging voltage may 
damage the headset. 
Warning:Only use the recommended charger if possible. Other charger may violate the 
warranty terms of the equipment and results in danger. If the charging cable is delivered 
with the headset, connect the cable to a CCC-certified charger or computer to charge the 
headset.

The headset is embedded with non-removable charging battery. Do not attempt to remove 
the battery from the headset; otherwise, the headset maybe damaged. If the headset is not 
used in a long time, keep it in a dry and well-ventilated place, and charge the headset once 
every two months.

1. If the red indicator blinks with low-voltage beep, the headset battery is low. If the headset 
continues to work, it may be automatically powered off. At this time, you need to charge the 
headset by connecting the cable of the charger to the charging port on the headset.

2. Connect the charger to an AC power socket.

3. The red indicator is on when the headset is being charged. If the charging is not started 
yet, disconnect the headset from the power socket, and reconnect the headset again. It 
takes about 2 hours to fully charge the headset. After battery charging is completed, the 
red indicator is off, and blue indicator is on. At this time, you can disconnect the charger 
form the power socket and headset.

* Two ear plugs, freely switch between 3D surround and ordinary stereo sound
* True sport Bluetooth headset, perfect tone
* All-metal audio cavity, aluminum alloy ear-lap, perfect body
* Magnetic adsorption functional earplug, magnetic absorb after picking off, avoiding to 
   fall off
* 360 Wrapped removable silicone ear hook, ergonomics design, matching the ear contour
* Simple line switch, easy to answer call and play music
* Support Chinese and English, meeting different requirements

1.USB Charging port
2.Microphone
3.Short Press: Volume Up
4.Multi- Function Button
5.Short press: Volume Down
6.Led indicator

1. Under power off status, long press MFB three seconds, the headphones power on 
     and enter in to a pairing mode with red &blue lights flash
2. Open the Bluetooth software of your phone, searching the headset
3. Find the Bluetooth headset, pairing it to finish connected.

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