Sony WI-C400 Reference guide

Help Guide
Wireless Stereo Headset
WI-C400
Use this manual if you encounter any problems, or have any questions.
This Help Guide is also available as a PDF, which can be downloaded here.
Getting started
What you can do with the BLUETOOTH function
About voice guidance
Supplied accessories
Checking the package contents
Replacing the earbuds
Adjusting the cable length
Parts and controls
Location and function of parts
About the indicator
Power/Charging
Charging the headset
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Available operating time
Checking the remaining battery charge
System requirements for battery charge using USB
Turning on the headset
Turning off the headset
Making connections
How to make a wireless connection to BLUETOOTH devices
One-touch connection (NFC) compatible Android devices
One-touch connection (NFC) with a smartphone (Android 4.1 or later)
Disconnecting the smartphone by one touch (NFC)
Switching the device by one touch (NFC)
Android devices not compatible with one-touch connection (NFC)
Pairing and connecting with an Android smartphone
Connecting to a paired Android smartphone
iPhone (iOS devices)
Pairing and connecting with an iPhone
Connecting to a paired iPhone
Computers
Pairing and connecting with a computer (Windows 10)
Pairing and connecting with a computer (Windows 8/Windows 8.1)
Pairing and connecting with a computer (Windows 7)
Connecting to a paired computer (Windows 10)
Connecting to a paired computer (Windows 8/Windows 8.1)
Connecting to a paired computer (Windows 7)
Other BLUETOOTH devices
Pairing and connecting with other BLUETOOTH devices
Connecting to a paired BLUETOOTH device
Disconnecting BLUETOOTH connection (after use)
Listening to music
Listening to music via a BLUETOOTH connection
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Listening to music from a device via BLUETOOTH connection
Controlling the audio device (BLUETOOTH connection)
Disconnecting BLUETOOTH connection (after use)
Supported codecs
Making phone calls
Receiving a call
Making a call
Functions for a phone call
Disconnecting BLUETOOTH connection (after use)
Using the voice assist function
Using the voice assist function (Google App)
Using the voice assist function (Siri)
Important information
Precautions
Trademarks
Customer support websites
Troubleshooting
What can I do to solve a problem?
Power/Charging
The headset is not turned on.
Charging cannot be done.
Charging time is too long.
The remaining battery charge of the headset is not displayed on the screen of an iPhone or iPod touch.
Sound
No sound
Low sound level
Low sound quality
Sound skips frequently during playback.
BLUETOOTH
Pairing cannot be done.
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Unable to connect the headset to a BLUETOOTH device with one-touch connection (NFC)
Unable to make a BLUETOOTH connection
Distorted sound
The BLUETOOTH wireless communication range is short, or the sound skips.
The headset does not operate properly.
No voice from callers
Low voice from callers
Resetting or initializing the headset
Resetting the headset
Initializing the headset to restore factory settings
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Help Guide
Wireless Stereo Headset
WI-C400
What you can do with the BLUETOOTH function
The headset uses BLUETOOTH® wireless technology, allowing you to listen to music or make phone calls wirelessly.
Listening to music
You can receive audio signals from a smartphone or music player to enjoy music wirelessly.
Talking on the phone
You can make and receive a call with your hands free, while leaving your smartphone or mobile phone in your bag or
pocket.
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Help Guide
Wireless Stereo Headset
WI-C400
About voice guidance
You hear voice guidance in the following situations via the headset.
When powering on: “Power on”
When powering off: “Power off”
When entering pairing mode: “BLUETOOTH pairing”
When establishing a BLUETOOTH connection: “BLUETOOTH connected”
When disconnecting a BLUETOOTH connection: “BLUETOOTH disconnected”
When checking the remaining battery charge: “Battery level high” / “Battery level medium” / “Battery level low”
When automatically turning off due to the low battery condition: “Please recharge headset”
When turning on the vibration function for receiving a call : “Vibration on”
When turning off the vibration function for receiving a call : “Vibration off”
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Help Guide
Wireless Stereo Headset
WI-C400
Checking the package contents
After opening the package, check that all items in the list are included in the package. If items are missing, contact your
dealer.
Numbers in ( ) indicate the item amount.
Wireless Stereo Headset (1)
Micro-USB cable (approx. 50 cm (19 3/4 in.)) (1)
Hybrid silicone rubber earbuds (SS/S/M/L 2 each)
Size M earbuds come attached to the headset.
Reference Guide (1)
Operating Instructions (1)
Other documents (1 set) (*)
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May not be supplied in some countries or regions.
*
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Help Guide
Wireless Stereo Headset
WI-C400
Replacing the earbuds
The headset comes with the M size earbuds.
If the headset tends to come off or you feel a lack of low frequency sound, change the earbuds to another size to fit your
right and left ears comfortably and snugly.
A: SS size (one line)
B: S size (two lines)
C: M size (three lines)
D: L size (four lines)
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Remove the earbuds.
Do not pinch the end of the earbud when removing it.
1
Attach the earbuds.
Do not attach the earbuds loose or skewed.
2
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Help Guide
Wireless Stereo Headset
WI-C400
Adjusting the cable length
You can adjust the cable length by using the cable adjuster to fix the cable.
Slide the cable adjuster to fit the headset to your head.
You can put the right and left units on the headset body when you do not use the headset.
Put the stopper into a hole to fix the units.
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Help Guide
Wireless Stereo Headset
WI-C400
Location and function of parts
left unit1.
Earbuds2.
right unit3.
Stopper4.
R mark5.
Cable adjuster
You can adjust the cable length by using this adjuster to fix the cable.
6.
N-mark7.
Tactile dot
The left unit has a tactile dot.
8.
L mark9.
Built-in antenna
A BLUETOOTH antenna is built into the headset.
10.
Indicator (blue/red)
Lights up in red during charging.
Lights up in red or blue to indicate the power or communication status of the headset.
11.
- ( ) / ( ) + buttons12.
Multi-function button
/ button
Controls various call and playback functions.
13.
(power) button14.
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Related Topic
About the indicator
Checking the remaining battery charge
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Micro-USB port
Connect a computer to this port with the supplied micro-USB cable to charge the headset.
15.
Microphone
Picks up the sound of your voice when talking on the phone.
16.
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Help Guide
Wireless Stereo Headset
WI-C400
About the indicator
You can check various statuses of the headset by the indicators.
: Turns on in blue/ : Turns on in red/-: Turns off
Turning on
- (flashes two times)
Turning off
(lights for about two seconds)
BLUETOOTH status indication
Pairing mode
Not connected
- - - - - - (about one-second intervals)
Connection process completed
(flashes quickly for about five seconds)
Connected
- - - (about five-second interval) - - -
Incoming call
Remaining battery charge indication
High
- - - -
Medium
- -
Low (needs to charge)
For details, refer to “Checking the remaining battery charge.”
Charging
While charging
Other
Initialization completed
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For details, refer to “Initializing the headset to restore factory settings.”
Hint
When the remaining battery charge becomes low, the indicator turns from blue to red, except for pairing mode.
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Help Guide
Wireless Stereo Headset
WI-C400
Charging the headset
The headset contains a lithium ion rechargeable battery. Charge the headset using the supplied micro-USB cable.
Hint
If charging starts while the headset is turned on, the headset will turn off automatically.
Note
If the headset is not used for a long time, the battery may be quickly depleted, however, after a few recharges, the battery life will
improve.
If you store the headset for a long time, charge the battery to its full capacity once every 6 months to avoid over discharge.
If the headset is not used for a long time, it may take longer to charge the battery.
Open the micro-USB port cover.
1
Connect the supplied micro-USB cable to the headset, and then connect the other end to a booted
computer.
The indicator (red) of the headset lights up.
Charging is completed in about 4.5 hours (*) and the indicator (red) goes off automatically.
After charging is complete, disconnect the micro-USB cable, then close the micro-USB port cover securely to
prevent water or dusts being mixed into the headset.
2
Time required for charging the empty battery to its full capacity. The time may be different depending on the conditions of use.
*
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If the computer enters into hibernation mode while connected to the headset, charging will not be completed properly. Check the
setting of the computer before charging. The indicator (red) will go off automatically if the computer enters into hibernation mode.
Charge the headset again in this case.
The headset cannot be operated (turning on, BLUETOOTH paring and connection, music playback, etc.) while charging or if kept
connected to the computer after charging is complete.
If the headset detects a problem while charging due to following causes, the indicator (red) may turn off, although charging is not
complete. In this case, charge again within the charging temperature range. If the problem persists, consult your nearest Sony
dealer.
Ambient temperature exceeds the charging temperature range of 5 °C – 35 °C(41 °F - 95 °F).
There is a problem with the battery.
If the headset is not used for a long time, the indicator (red) may not light up when you connect the micro-USB cable to charge
the headset. In this case, do not disconnect the micro-USB cable from the headset: wait a few minutes until the indicator (red)
lights up.
If the life of the built-in rechargeable battery drops significantly, the battery should be replaced. Consult your nearest Sony dealer
for replacement of the rechargeable battery.
Avoid exposure to temperature extremes, direct sunlight, moisture, sand, dust or mechanical shock. Never leave the headset in a
car parked in the sun.
Use the supplied micro-USB cable only, and connect directly to a computer. Charging will not be completed properly by an
indirect connection, such as via a USB hub.
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Help Guide
Wireless Stereo Headset
WI-C400
Available operating time
The available operating times of the headset on a fully-charged battery are as follows:
BLUETOOTH connection
Music Playback time (SBC/AAC): Max. 20 hours
About 60 minutes of music playback is possible after 15 minutes charging.
Communication time: Max. 20 hours
Standby time: Max. 200 hours
Note
Usage hours may be different depending on the settings and conditions of use.
Related Topic
Supported codecs
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Help Guide
Wireless Stereo Headset
WI-C400
Checking the remaining battery charge
You can check the remaining battery charge of the rechargeable battery.
When you turn on the headset or press the button while the headset is on, the indicator (blue) flashes two times,
then the indicator (red) flashes.
You also hear voice guidance of the remaining battery charge.
3 times - - - - : High “Battery level high”
2 times - - : Medium “Battery level medium”
1 time : Low (needs to charge) “Battery level low”
When the battery is almost empty
The indicator turns red. When the battery becomes empty, the headset sounds a warning beep, you hear voice guidance
“Please recharge headset”, and the head set turns off automatically.
When you are using an iPhone or iPod touch
When the headset is connected to an iPhone or iPod touch (iOS 5.0 or later) that supports HFP (Hands-free Profile), it
will show an icon that indicates the remaining battery charge of the headset on the screen.
Compatible devices
iPhone or iPod touch (iOS 5.0 or later) supporting Hands-free Profile (HFP)
iOS 10.2 or later
iOS 7.0 or later
iOS 5.X / 6.X
A: Remaining battery charge of the headset
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B: 100% to 70%
C: 70% to 50%
D: 50% to 20%
E: 20% or lower (needs to charge)
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Help Guide
Wireless Stereo Headset
WI-C400
System requirements for battery charge using USB
The headset contains a lithium ion rechargeable battery, which should be charged before using the headset for the first
time.
Personal Computer with pre-installed with any of the following operating systems and USB port:
When using Windows®
Windows® 10 Home / Windows® 10 Pro
Windows® 8.1 / Windows® 8.1 Pro
Windows® 8 / Windows® 8 Pro
Windows® 7 Home Basic / Home Premium / Professional / Ultimate
When using Mac
Mac OS X (version 10.9 or later)
Note
Sony does not guarantee proper operation in all system environments.
When using Windows 8.1 update using Windows Update.
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Help Guide
Wireless Stereo Headset
WI-C400
Turning on the headset
Related Topic
Turning off the headset
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Press and hold the button for about 2 seconds until the indicator (blue) flashes.
1
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