Precautions

About smartphone radio waves and USB transceiver communication

When connecting the USB transceiver to a smartphone, radio interference may occur depending on the radio wave conditions of the smartphone. This may result in noise, audio dropout, or connection may not be possible. In such a case, perform the following steps.

  • Move to a location where your smartphone’s signal situation improves.
  • Move the headset closer to the smartphone.
  • Flip the side of the USB transceiver that has the slide switch and plug it back in.

On the USB transceiver/Bluetooth communications

  • The USB transceiver and Bluetooth devices use the same frequency band of 2.4 GHz as wireless LAN IEEE 802.11ax/b/g/n). Therefore, if you use the headset near a wireless LAN device, radio interference may occur and result in noise, audio dropouts, or disabled connection. In such a case, perform the following steps.
    • Change the frequency band of your smartphone and wireless LAN device to 5 GHz (IEEE 802.11ac).
      For details, refer to the operating instructions supplied with the wireless LAN device.
  • Bluetooth wireless technology is a short-range wireless technology that enables communication between digital devices, such as smartphones and computers. The maximum communication distance may vary depending on the presence of obstacles (people, metal objects, walls, etc.) or the electromagnetic environment.
  • Microwaves emitting from a Bluetooth device may affect the operation of electronic medical devices. Turn off the headset and other Bluetooth devices in the following locations, as it may cause an accident:
    • in hospitals, near priority seating in trains, locations where inflammable gas is present, near automatic doors, or near fire alarms.
  • This product emits radio waves when used in wireless mode. When used in wireless mode on an airplane, follow flight crew directions regarding permissible use of products in wireless mode.
  • The audio playback on the headset may be delayed from that on the transmitting device due to the characteristics of wireless technology. As a result, the sound may not be in sync with the image when playing games or viewing movies.
  • The headset supports security functions that comply with the Bluetooth standard as a means of ensuring security during communication using Bluetooth wireless technology. However, depending on the configured settings and other factors, this security may not be sufficient. Be careful when communicating using Bluetooth wireless technology.
  • Sony shall assume no responsibility for any damages or loss resulting from information leaks that occur when using Bluetooth communications.
  • Bluetooth connections with all Bluetooth devices cannot be guaranteed.
    • Bluetooth devices connected with the headset must comply with the Bluetooth standard prescribed by Bluetooth SIG, Inc., and must be certified as compliant.
    • Even if a connected device complies with the Bluetooth standard, the characteristics or specifications of the Bluetooth device may sometimes prevent it from connecting or cause differences in control methods, display, or operating procedure.
    • When using the headset to perform hands-free talking on the phone, noise may occur depending on the connected device or the communication environment.
  • Depending on the device to be connected, it may require some time to start communications.

Note on static electricity

  • If you use the headset when the air is dry, you may experience discomfort due to static electricity accumulated on your body. This is not a malfunction of the headset. You can reduce the effect by wearing clothes made of natural materials that do not easily generate static electricity.

Notes on wearing the headset

  • After use, remove the headset from your ears slowly.
  • The headset tightly seals the ears. Forcibly pressing the headset against your ears or quickly pulling it off can result in eardrum damage. When putting on the headset, the speaker diaphragm may produce a click sound. This is not a malfunction.

Other notes

  • When the volume is increased too much, sound may leak. Be careful not to bother others. As a guide, use at a volume that allows you to be called and answer even in a noisy place.
  • Do not subject the headset to excessive shock as it is a precision device.
  • Do not put a smartphone with the USB transceiver connected into pants pocket or other clothing pocket. A strong external force applied to the transceiver may cause deformation or malfunction of the USB port part of your smartphone.
  • Depending on the signal conditions of your smartphone or the surrounding environment, you may not be able to use the headset.
  • Do not breathe into the driver unit.
  • Do not apply weight or pressure to the headset for long periods, including when it is stored, as it may cause deformation.
  • If you experience discomfort while using the headset, stop using it immediately.
  • The earpads may be damaged or deteriorate with long-term use and storage.
  • Be careful not to hit your eyes with the boom microphone when putting on, taking off or using the headset.
  • Earpads are consumables. If the earpads deteriorate or are damaged through long-term use and storage, contact your nearest Sony dealer.

Cleaning the headset

  • Dust and dirt on the exterior of the headset can be wiped off with pure water type wet wipes. Do not use the following items as they may damage the surface finish and lead to malfunction or breakage.
    • Wet wipes containing alcohol
    • Thinner
    • Benzine and other similar substances

Do not use the headset near medical devices

  • Radio waves can affect cardiac pacemakers and medical devices. Do not use the headset and charging case in crowded places such as crowded trains or inside a medical institution.
  • The headset has magnets. Magnets may affect pacemakers, programmable shunt valves for hydrocephalus treatment, and other medical devices. Keep the headset away from people using these medical devices. Consult your doctor before using the headset if you use any such medical devices.

Keep the headset away from magnetic cards

  • The headset has magnets. If a magnetic card comes near the headset and charging case, the card magnet may be affected or become deactivated.

Keep out of reach of infants

  • There is a risk that they may swallow the USB transceiver and small parts. Keep out of reach of infants after use.

About the temperature rise

  • While charging the headset, or when using the headset for a long time, the temperature of the headset may rise, but this is not a malfunction.