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Thank you for purchasing the AVENTHO 300 Wireless
Over-Ear headphones from beyerdynamic.
Please take some time to read this information
carefully before using the AVENTHO 300.
SAFETY INSTRUCTIONS
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Read these safety instructions carefully before
using the AVENTHO 300.
Heed all instructions given, especially those
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regarding the safe use of the AVENTHO 300.
Do not use the AVENTHO 300 when it is damaged.
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Intended use
Only use the AVENTHO 300 as described in this
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manual.
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The company beyerdynamic GmbH & Co. KG
accepts no liability for damage to the AVENTHO 300
or injury to persons caused by careless, improper
or incorrect use of the AVENTHO 300, or by use for
purposes not specified by the manufacturer.
The company beyerdynamic GmbH & Co. KG is not
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liable for damage to USB devices that do not comply
with the USB specifications.
The company beyerdynamic GmbH & Co. KG is
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not liable for damage resulting from connection
interruptions due to batteries being empty or too
old, or due to exceeding the Bluetooth® transmission
range.
Please also observe the relevant country-specific
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regulations before using the product.
Adjusting the volume
High volume levels over longer listening
periods can permanently damage your
hearing.
Before using the AVENTHO 300, set the volume to
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minimum.
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Only increase the volume after putting on the
AVENTHO 300.
Do not use the AVENTHO 300 at high volume over
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a long period of time.
When listening and speaking normally using
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AVENTHO 300, your own voice should still be
perceptible.
In case of tinnitus, reduce the volume. If necessary,
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consult a doctor.
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We would like to point out that consistent high
volume levels and longer listening periods can
damage your hearing. Damage to hearing is
irreversible. Always ensure an adequate volume
level. It is advisable to keep listening periods as
short as possible at high volume levels.
AVENTHO 300 — Wireless Over-Ear Headphones
Reducing perception of ambient noise
The AVENTHO 300 headphones drastically reduce the
perception of ambient noise. Using the AVENTHO 300
in road traffic can be potentially dangerous. The user's
hearing must not be impaired to the extent that it
causes road safety risks.
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Do not use the AVENTHO 300 within the action area
of potentially dangerous machines and tools.
Avoid using the AVENTHO 300 in situations where
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hearing must not be impaired — particularly in road
traffic, when crossing a level crossing or on a con-
struction site.
General maintenance instructions
Clean all parts of the AVENTHO 300 with a soft cloth
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moistened with water. Make sure that no liquid gets
into the housing or the transducer.
Do not use cleaning agents containing solvents, as
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these can damage the surface.
Risk of swallowing
Keep small parts, such as product, packaging and
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accessories, away from children and pets. They
constitute a choking hazard if swallowed!
Power and connecting cable
Only use the cable supplied by us for both charging
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and connecting to a laptop.
Using the batteries
Danger from heat, water
and mechanical stress
Excessive heat, water and mechanical stress, may
cause explosion, heat, fire, smoke or fumes. Injuries
and irreversible damage to the battery may result.
Do not expose the battery to excessive heat, fires or
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extremely low air pressure. There is a risk of explosion,
fire, smoke or gas.
Do not subject the battery to mechanical stress such
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as crushing. This may lead to an irreversible damage
to the battery, explosion or injuries.
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Do not open the housing or disassemble/replace the
battery.
Only use a USB 2.0/3.0 standard-compliant 5 V power
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adapter to charge the battery via the integrated
USB type C socket.
Environmental conditions
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Do not expose the AVENTHO 300 to rain, snow, liquids
or moisture.
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