How The Sound May Be Muffled While You Are Swimming; About The Differences Between The Two Types Of Earbuds - Sony Walkman NWZ-W273S Help Manual

water.
If you use your Walkman in a swimming pool, do not exceed a depth of 2 m
(6.5 feet) while wearing it. Before use, be sure to read and understand the
water resistant specifications completely.
(*1) The headphone sections are not water-tight.
(*2) IPX5 (Degrees of protection against jets of water): Your Walkman , with
standard-type earbuds attached, will maintain its operability even when
exposed to direct streams of water from any direction in a situation where
approximately 12.5 l/min. of water is supplied for more than 3 minutes
from a distance of about 3 m using a nozzle with an inner diameter of
6.3 mm. However, this does not apply to the headphone sections.
IPX8 (Degrees of protection against continual water submersion): Your
Walkman, with standard-type earbuds attached, will maintain its
operability even when submersed in water to a depth of 2 m for 30
minutes.
How the sound may be muffled while you are
swimming
1. If the water gets into a gap between your ears and the headphones (
and covers the eardrum (
You can prevent water penetration by using the most appropriate size
of earbuds that fits your ears firmly.
2. If water accumulates in the drivers of the headphones (
may become muffled.
You can prevent water penetration by using the Swimming earbuds
supplied with your Walkman.
About the differences between the two types of
earbuds
Standard-type earbuds (Applicable to
You can use them in a wide variety of situations, even swimming.
Swimming earbuds (Applicable to
Employing a structure that prevents water penetration inside the
headphones, Swimming earbuds allow you to enjoy music more
comfortably during swimming.
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), sound may become muffled.
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), the sound