The headset contains a lithium ion rechargeable battery, which should be charged before using the headset for the first time.
System requirements for battery charge using USB
Personal Computer with pre-installed with any of the following operating systems and USB port:
(when using Windows)
Home Basic / Home Premium / Professional / Ultimate
Windows Vista® (Service Pack 2 or later)
Home Basic / Home Premium / Business / Ultimate
Windows® XP (Service Pack 3 or later)
Home Edition / Professional / Media Center Edition 2004 / Media Center Edition 2005
(when using Macintosh)
Mac OS X (version.10.3 or later)
Charging the headset
- Open the cover of the micro-USB port.
Insert the tip of your fingernail in the groove, and open the cover.
- Connect the supplied micro-USB cable to the headset, and then connect the other end to a computer.
Make sure that you connect the plug of the micro-USB cable in the direction as shown in the illustration below.
Charging starts when the headset and the computer are connected.
Make sure that the indicator (red) lights up. Charging is completed in about 6 hours* and the indicator (red) goes off automatically.
*Time required to charge the empty battery to its full capacity
- 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 and wait until the indicator (red) lights up.
- When you close the cover of the micro-USB port after charging the battery, push the catch at the edge (the round part) of the cover into the port compartment.
- If the micro-USB cable is connected to a computer while the headset is turned on, the headset will be turned off automatically.
- To charge the headset from an AC outlet, use USB Charging AC Power Adaptor* (sold separately). For details, refer to the manuals supplied with the USB Charging AC Power Adaptor.
- The headset cannot be turned on while charging the battery.
*Refer to the Reference Guide on the recommended adapter.
If the headset detects a problem while charging, the indicator (red) may turn off, although charging is not complete.
Check for the following causes:
- Ambient temperature exceeds the range of 5 °C - 35 °C (41 °F - 95 °F).
- There is a problem with the battery.
In this case, charge again within the above-mentioned temperature range. If the problem persists, consult your nearest Sony dealer.
- 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.
- Even if you do not intend to use the headset for a long time, charge the battery to its full capacity once every 6 months to maintain its performance.
- If the headset is not used for a long time, it may take longer to charge the battery.
- If the life of the built-in rechargeable battery drops to half the normal length, 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.
- 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 even if the computer enters into hibernation mode. Charge the headset again in this case.
- 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.
Approx. usage hours
Communication time (including music playback time) (up to)
Standby time (up to)
The communication time will be about 15 hours when it is charged for 2 hours.
Time stated above may vary, depending on ambient temperature or conditions of use.
Checking the remaining battery
If you press the POWER button while the headset is turned on, the indicator (red) flashes. You can check the remaining battery by the number of times the indicator (red) flashes. The indicator (red) flashes immediately after the headset is turned on to indicate the remaining battery power.
Low (needs to charge)
- You cannot check the remaining battery during pairing operation.
When the battery is almost empty
The indicator turns red. When the battery becomes empty, the headset sounds a beep and turns off automatically.