2. Do not dismantle the product in any way, as this can
result in a fire or electrical breakdown, causing the
product to be completely damaged. As this is extremely
dangerous, we request that any maintenance or servicing
of the headphones be performed only by a qualified
service provider/manufacturer
3. Please do not remove the battery by yourself; this is a
task that should be handled by a service provider/
manufacturer. Replacing the current battery with an
ill-fitting set can cause a fire or electric hazard, so it is
strongly discouraged.