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NIHL
NIHL is a preventable condition caused by both one-time and extended
exposure to excessive decibel (dB) levels. This harm to sensitive inner ear
structures is irreversible and people of all ages can be affected. Damage can
happen in a single event or gradually over time. One-time exposure to an
intense "impulse" sound, such as an explosion, or by continued exposure to
loud sounds over 85 decibels can cause harm. Indicators of NIHL include
hearing loss and tinnitus, a condition of sensing constant ringing, buzzing or
roaring. The NIDCD (National Institute on Deafness and Other Communication
Disorders) offers this simple rule of thumb: avoid sound exposure that is "too
loud, too close or too long." Here are some general references to sound levels
that occur in everyday life: refrigerator humming (45 dB); normal conversation
(60 dB); city traffic (85 dB); motorcycles (95 dB); an MP3 player at full volume
(105 dB); sirens (120 dB); firecrackers (150 dB).
WARRANTY
Master & Dynamic guarantees this product against defects in materials or
workmanship for a period of two years from the date of original purchase on
our website or from an authorized Master & Dynamic retailer or reseller. As
an exception to this warranty period, batteries are guaranteed for proper
functioning for a period of one year from the date of original purchase.
Defective batteries are covered by Master & Dynamic's Limited Warranty but
battery wear from normal use is not covered.
If returned within the warranty period, Master & Dynamic will at its discretion
either repair the defective product or replace it with a repaired or refurbished
product of identical specifications as the returned product. This limited
warranty is in lieu of all other warranties, expressed or implied, including,
but not limited to, any implied warranty of merchantability or fitness for a
particular purpose.
Master & Dynamic shall have no liability of any kind for any direct, indirect,
incidental or consequential damages or expenses that arise from the use of
this product.
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