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Wireless Duet Mode

Equipment Charging

Declaration

Warranty

Warranty Card

Warranty Records

1. You can charge your microphone by portable

power source, computer USB port or power adapter;

2. During the charging progress, the indicator will be in

red;

3. When charging finished, the indicator will be off.

Note:

If you turn on the power switch when charging, the

indicator will be in white and red (in a pink light

effect state).

It is recommended to keep the microphone off until

the charging is completed.

Note:

1. In the power-on state, when the power of

microphone is less than 10%, the red indicator

light flashes, indicating that the power is low,

and you can hear the prompt voice of low power;

2. To use the power adapter for charging, you

should purchase a power adapter that has

obtained CCC certification and meets the

standard requirements. It is recommended to

choose a 5V 1A power adapter for charging;

3. Do not charge the battery when the temperature

is below 0, because the low temperature may

cause the battery damaged.

4. Batteries must not be exposed to excessive heat

such as sunlight, fire, etc.

Customer Service:

CALF products are covered by an 12-month limited

warranty from the date of its original purchase. If any

problems occur, please contact our support team.

We can only provide after sales service for products

that are sold by CALF or CALF authorized retailers and

distributors. If you have purchased your unit from a

different place, please contact your seller for return and

warranty issues.

Website: http://www.calfglobal.com

Mail Support: [email protected]

Warranty Regulations:

Within 7 days from the date of purchase, if CALF speaker
microphone has quality defect, the customer may choose to
refund the purchase at the invoice price or replace it with a new
one of the same model and specification.
Within 15 days from the date of purchase, if CALF speaker
microphone has a quality defect, the customer may choose to
replace it with a new one of the same model and specification;
The period of warranty services (repair, replacement and refund)
for CALF speaker microphone is one year;
The warranty will be invalid if it is altered.
When there is no warranty card, or the valid receipt is lost, or
thewarranty period has expired;
When the damage is caused by failure to use, maintain or store
the product as required by the instruction;
When the damage is caused by force majeure such as fire disaster,
flood, lightning stroke, etc.;
When the product model or code on the warranty card is not in
line with the product;
When the damage is caused by disassembly and repair by non-
CALF authorized service personnel;
In cases mentioned above, the consumer may seek a solution
from related responsible party or choose paid service;
Normal discoloration, wear or consumption generated by the use
of the product are not faults included in the warranty scope;
Please understand that any product failure caused by customer’s
own reason does not fall into the scope of after-sale service.

FCC Statement：

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.

NOTE:

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.

The device has been evaluated to meet general RF exposure

requirement. The device can be used in portable exposure

condition without restriction.

Environmentally friendly disposal. Old electrical
appliances must not be disposed of together with
the residual waste, but have to be disposed of
separately The disposal at the communal collecting
point via private persons is for free. The owner of old
appliances is responsible to bring the appliances
to these collecting points or to similar collection
points With this little personal effort, you contribute to
recycle valuable raw materials and the treatment of
toxic substances.

Safety information:

1.  The temperature range of the battery is -20-60℃ in
  transportation and -20-60℃ in storage.
2.   Don't put the battery into fire or a hot oven, or mechancially
  crushing or cutting a battery, that can result in an explosion.
3.   Don't leave a battery in an extremely high temperature
  surrounding environment that can result in an explosion or the
  leakage of flammable liquid or gas.
4.   Don't low than 86kPa air pressure that may result in an
  explosion or the leakage of flammable liquid or gas.
5.   Don't replace the battery pack with an incorrect type that can
  defeat a safeguard.
6.   Don't charge the battery under the following conditions:
  A:in direct sunlight, temperatures below 5℃；
  B:The maximum battery surface temperatures 52℃。
7.   If you listen at a high volume for a long time, there will be a
  warning signal.
8.   Please use USB2.0 and below ports for power.
9.   The normal working temperature of the product is 0-40℃ .

EU Declaration of Conformity
Hereby, Beijing Changba Technology Co.,Ltd. declares that the
radio equipment type is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at the
following internet address:

http://www.calfglobal.com

CAUTION:

RISK OF EXPLOSION IF BATTERY IS REPLACED
BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING
TO THE INSTRUCTIONS.

To prevent possible hearing damage，do not listen at high
volume levels for long periods.

3. Press and hold the "" button on either of the

two microphones as the main microphone for 2

seconds and the work indicator will flash quickly.

When the two microphones simultaneously prompt

“duet mode on”, and the main microphone prompt

“please connect your phone”, the two microphones

are successfully paired;

4. Turn on the Bluetooth on your phone, search and

click “CALF speaker microphone C12” to enable

the Bluetooth connection (only can sort out one

microphone);

5. Open Changba or other karaoke apps on your phone

and adjust to the proper volume;

6. Start singing together with friends.

Special Note:

1. Wireless Duet Mode requires two CALF speaker

microphones, and does not support pairing of more

than two devices;

2. After the two microphones are paired successfully,

shutting down or resetting any one of the

microphones will disconnect the pairing state.

3. Wireless duet mode does not support Bluetooth

recording.

Note: The radio type approval CMIIT ID is on the product nameplate.
Copyright @ Beijing Changba Science and Technology Co., Ltd. All
rights reserved.

Beijing Changba Science and Technology Co., Ltd
http://www.changba.com

Part name

Toxic and Hazardous Substances or Elements

Plum-

bum

(Pb)

Mer-

cury

(Hg)

Cad-

mium

(Cd)

Hexava-

lent

chro-

mium

(Cr6+)

Polybro-

minated

biphenyls

(PBB)

Polybro-

minated

diphenyl

ethers

(PBDE)

Plastic

case

〇

Battery

Ⅹ

〇

Circuit

board

Ⅹ

〇

cable

connector

Ⅹ

〇

〇 : Indicates that the content of the toxic and hazardous
substances in the homogeneous material of the part is below
the limit requirements specified in GB/T26572-2011 "Limited
Requirements for Restricted Substances in Electrical and
Electronic Products".

X: Indicates that the content of the toxic and hazardous
substances in at least one homogeneous material of the
component exceeds the limit requirements specified in GB/
T26572-2011 "Limited Requirements for Restricted Substances
in Electrical and Electronic Products", and there is currently
no mature alternative in the industry scheme, in line with
the environmental protection requirements of the EU RoHS
directive.

Customer name:

Phone number:

Customer address:

Product name:

Product model:

Factory number:

Means of purchase:

Date of purchase:

Record of first service

Delivery time
Fault condition

upon delivery

Fault reason