User's Manual
3
 • Be sure to read the connected device’s user manual before use.
 • Audio-Technica will not be liable in any way for any loss of data 
in the unlikely event that such losses should occur while using 
the product.
 • On public transportation or in other public places, keep the 
volume low so as not to disturb other people.
 • Minimize the volume on your device before connecting the 
product.
 • When using the product in a dry environment, you may feel a 
tingling sensation in your ears. This is caused by static 
electricity accumulated on your body, not by product 
malfunction.
 • Do not subject the product to strong impact.
 • Do not store the product in direct sunlight, near heating 
devices, or in hot, humid, or dusty places. Additionally, do not 
allow the product to get wet.
 • When the product is used for a long time, the product may 
become discolored due to ultraviolet light (especially direct 
sunlight) and wear.
 • If the product is placed in a bag while the USB charging cable 
is still connected, the USB charging cable may become caught, 
severed, or broken.
 • Make sure to hold the plug when connecting and disconnecting 
the USB charging cable. The USB charging cable may become 
severed or an accident may occur if you pull on the cable itself.
 • When you are not using the USB charging cable, disconnect it 
from the product.
 • This product can be used to talk on the phone only when using 
a mobile telephone network. Support for telephony apps that 
use a mobile data network is not guaranteed.
 • If you use the product near an electronic device or transmitter 
(such as a mobile phone) which is not connected with the 
product, unwanted noise may be heard. In this case, move the 
product away from the electronic device or transmitter.
 • If you use the product near a TV or radio antenna, noise may be 
seen or heard in the television or radio signal. In this case, move 
the product away from the TV or radio antenna.
 • To protect the built-in rechargeable battery, charge it at least 
once every 6 months. If too much time passes between 
charges, the life of the rechargeable battery may be reduced, or 
the rechargeable battery may no longer be able to be charged.
 • Charge the product in a well-ventilated place (10 to 35 °C) away 
from direct sunlight. Otherwise, the battery may deteriorate, 
possibly resulting in shorter periods of continuous use or may 
fail to charge.
Notes on use
 • The water-resistant (drip-proof) performance is designed to protect the headphones if they get wet from rain, etc. (equivalent to IPX2). 
JIS/IEC protection grade IPX2 means that the headphones are protected against water droplets falling from above at a 15-degree 
angle. The headphones cannot be used in hot and humid places, such as bathrooms.
 • Although the product has water-resistant (drip-proof) capabilities equivalent to IPX2, the part where the sound comes from is not 
water-resistant (drip-proof).
 • Make sure to close the USB cap completely when using the product to maintain water-resistant (drip-proof). If the USB cap is not 
closed completely, water may enter inside.
 • The headphones are not waterproof. Submerging them in water may cause damage.
About water-resistant (drip-proof) performance










