User's Manual
Table Of Contents

2 | M2 AEBT
Important safety instructions
Important safety instructions
 X Read the instruction manual, safety guide, quick guide (as supplied) carefully 
and completely before using the product.
 X Always include this safety guide when passing the product on to third parties.
 X Do not use an obviously defective product.
Preventing damage to health and accidents
 X Protect your hearing from high volume levels. Permanent hearing damage 
may occur when headphones are used at high volume levels for long periods 
of time. Sennheiser headphones sound exceptionally good at low and me-
dium volume levels.
 X Keep the headphones at least 10 cm/3.94” from cardiac pacemaker or im-
planted defibrillator. The headphones contain magnets that generate a 
magnetic field which could cause interference with cardiac pacemaker and 
implanted defibrillator.
 X Keep the product and its accessories away from small children and pets. The 
product contains small parts which may cause choking hazards to small chil-
dren and pets.
 X Do not use the product in situations which require special attention (for ex-
ample, in traffic or when performing skilled jobs).
Preventing damage to the product and malfunctions
 X Always keep the product dry and do not expose it to extreme temperatures 
to avoid corrosion or deformation. The normal operating temperature is from 
0 to 40°C/32 to 104°F.
 X Use only attachments/accessories/spare parts supplied or recommended by 
Sennheiser.
 X Clean the non-leather parts of the product only with a soft, dry cloth.
 X Use only the product in environments where Bluetooth® wireless transmis-
sion is permitted. 
 X Do not wear the headphones during charging because the built-in recharge-
able battery can get warm.
 X Use the product with care and store it in a clean, dust-free environment.
 X Do not operate the product near heat sources.
Caring for leather parts
 X Gently wipe leather parts periodically with a clean, soft cloth dampened with 
water.
 X Do not use leather polish, detergents or harsh soaps to clean leather parts.
 X Avoid storing the headphones in a damp or humid environment.










