Help Guide
Wireless Stereo Headset
WH-CH400
The Bluetooth wireless communication range is short, or the sound skips.
Remove any obstacles between the antenna of the Bluetooth device to be connected and the built-in antenna of the
headset. The antenna of the headset is built into the part shown in the dotted line below.
A: Location of the built-in antenna
Bluetooth communications may be disabled, or noise or audio dropout may occur under the following conditions.
When there is a human body between the headset and the Bluetooth device
Put the Bluetooth device in the same direction as the antenna of the headset to improve the Bluetooth
communications.
There is an obstacle, such as metal or a wall, between the headset and the Bluetooth device.
In places with wireless LAN, where a microwave oven is used, electromagnetic waves are generated, etc.
The situation may be improved by changing the wireless playback quality settings or fixing the wireless playback
mode to SBC on the transmitting device. For details, refer to the operating instructions supplied with the transmitting
device.
Because Bluetooth devices and Wi-Fi (IEEE802.11b/g/n) use the same frequency (2.4 GHz), microwave interference
may occur resulting in noise or audio dropout or communications being disabled if this headset is used near a Wi-Fi
device. In such a case, perform the following.
Use this headset at least 10 m (30 feet) away from the Wi-Fi device.
If this headset is used within 10 m (30 feet) of a Wi-Fi device, turn off the Wi-Fi device.
Install this headset and the Bluetooth device as near to each other as possible.
If you are enjoying music with your smartphone, the situation may be improved by shutting down unnecessary apps
or restarting your smartphone.
4-730-303-11(2) Copyright 2018 Sony Corporation
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