Important safety instructions
2 | MM 400-X
Important safety instructions
왘 Read this instruction manual carefully and completely before using the
product.
왘 Always include this instruction manual when passing the product on to
third parties.
왘 Do not use an obviously defective product.
Preventing damage to health and accidents
왘 Do not listen at high volume levels for long periods of time to prevent
hearing damage.
왘 Always maintain a distance of at least 3.94“ (10 cm) between the ear
cups and the cardiac pacemaker or implanted defibrillator since the
product generates permanent magnetic fields.
왘 Keep the product, accessory and packaging parts out of reach of chil-
dren and pets who could swallow smaller pieces.
왘 Do not use the product in an environment that requires your special
attention (e.g. in traffic).
Preventing damage to the product and malfunctions
왘 Always keep the product dry and do not expose it to extreme temper-
atures (hairdryer, heater, extended exposure to sunlight, etc.) to avoid
corrosion or deformation.
왘 Only clean the product with a soft, dry cloth.
왘 Switch off the product after use to conserve battery power. Remove the
battery pack if the product will not be used for extended periods of
time.
왘 Only use the product in environments where wireless Bluetooth
®
trans-
mission is permitted.
왘 Only use attachments/accessories supplied or recommended by
Sennheiser.
Intended use
The MM 400-X is a wireless Bluetooth headset that works with mobile
phones or other Bluetooth devices/Bluetooth compliant devices and
allows for wireless music enjoyment or calls.
“Improper use” means using the product
• other than as described in this instruction manual,
• under operating conditions which differ from those described in this
instruction manual.
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