c)
Rechargeable batteries
• The rechargeable battery is permanently built into the product and cannot be
replaced.
• Never damage the rechargeable battery. Damaging the casing of the rechargeable
battery might cause an explosion or a fire! Unlike conventional batteries/
rechargeable batteries (e.g. AA or AAA type), the casing of the LiPo rechargeable
battery does not consist of a thin sheet but rather a sensitive plastic film only.
• Never short-circuit the contacts of the rechargeable battery. Do not throw
the rechargeable battery or the product into fire. There is a danger of fire and
explosion!
• Charge the rechargeable battery regularly, even if you are not using the product.
Due to the rechargeable battery technology being used, you do not need to
discharge the rechargeable battery first.
• Never charge the rechargeable battery of the product unattended.
• When charging, place the product on a surface that is not heat-sensitive. It is
normal that a certain amount of heat is generated during charging.
Operating elements
1
2
4
7
6
5
3
8
1 Call button
2 Microphone
3 Ear clip
4 Micro USB charging connection
5 Volume
6 Earphone
7 Volume button –
8 LED indicator lamp
Charging the headset
Charging takes approx. 2 hours. The built-in rechargeable battery must be fully charged for
approx. 2 hours before first use. To charge the rechargeable battery, proceed as follows:
• Connect the Micro USB plug on the included USB charging cable to the Micro USB charging
connection (4). Connect the other end of the USB charging cable (USB-A plug) to a USB port
on your computer or a USB charging device.
• The LED indicator (8) lights up red during charging.
• The red LED indicator turns off when charging is complete. Disconnect the USB charging
cable from all connected devices.
The fully charged rechargeable battery has sufficient power for approx. 3 hours of
call time and approx. 72 hours of standby operation. The actual times depend on the
Bluetooth connection, settings, ambient temperature and manner of use.
The battery power of the headset can be shown on the screen of an iPhone mobile
phone (iOS).
Operation
Headset and mobile device must be operated within the transmission range of
10 meters. Please note that furniture, walls or electronic devices may cause
interference between the headset and your mobile device.
a) LED indicators
Headset Status
LED indicator lamp
Standby operation after pairing
Blue LED blinks 1 x every 7 seconds
Incoming call
Blue LED blinks 1 x every 5 seconds
Low battery
Red LED blinks 1 x every 15 seconds and
acoustic signal (beep) sounds
Charging mode: Rechargeable battery
is charging
Red LED remains lit
Charging mode: Rechargeable battery
is fully charged
Red LED turns off
Operating instructions
TWNT-BH703B Bluetooth
®
Headset Black
Item no. 2142901
Intended use
The product is designed for the wireless transmission of speech and music from mobile
telephones, tablets, notebooks and other devices that feature a suitable Bluetooth connection.
The transmission range is up to 10 meters in open spaces. The product features a built-in
rechargeable battery for approx. 72 hours standby operation.
It is intended for indoor use only. Do not use it outdoors. Contact with moisture, e.g. in
bathrooms, must be avoided under all circumstances.
For safety and approval purposes, you must not rebuild and/or modify this product. Using the
product for purposes other than those described above may damage the product. In addition,
improper use can cause hazards such as short circuits, fire and electric shocks. Read the
instructions carefully and store them in a safe place. Make this product available to third parties
only together with its operating instructions.
This product complies with statutory national and European regulations. All company and
product names are trademarks of their respective owners. All rights reserved.
Package contents
• Bluetooth Headset
• USB charging cable
• Operating instructions
Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or
scan the QR code on this page. Follow the instructions on the website.
Explanation of symbols
The symbol with the lightning in the triangle indicates that there is a risk to your
health, e.g. due to an electric shock.
This symbol is used to highlight important information in these operating instructions.
Always read this information carefully.
This symbol indicates special information and advice on how to use the product.
Safety instructions
Read the operating instructions carefully and especially observe the safety
information. If you do not follow the safety instructions and information on
proper handling in this manual, we assume no liability for any resulting
personal injury or damage to property. Such cases will invalidate the warranty/
guarantee.
a) General
• This product is not a toy. Keep it out of the reach of children and pets.
• Do not leave packaging material lying around carelessly. This may become
dangerous playing material for children.
• Protect the product from extreme temperatures, direct sunlight, strong jolts, high
humidity, moisture, flammable gases, vapours and solvents.
• Do not place the product under any mechanical stress.
• If it is no longer possible to operate the product safely, stop using it and prevent
unauthorized use. Safe operation can no longer be guaranteed if the product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in poor ambient conditions or
- has been subjected to any serious transport-related stress.
• Always handle the product carefully. Jolts, impacts or a fall even from a low height
may damage the product.
• Consult a technician if you are not sure how to use or connect the product.
• Maintenance, modifications and repairs must be done by a technician or an
authorized repair centre.
• If you have questions which remain unanswered by these operating instructions,
contact our technical support service or other technical personnel.
b)
Connected devices
• Always observe the safety and operating instructions of any other devices which
are connected to the product.