User manual BOSE QUIETCOMFORT 3

[. . . ] Avoid placing it around metal objects such as keys, pocket change, paper clips, and jewelry. · Do not hit the battery with a hammer, step on, throw or drop it to expose it to a strong shock. · The battery used in this device may present a risk of fire or chemical burn if mistreated. Use of another battery may present a risk of fire or explosion. Japanese English CAUTIONS Do not allow the battery to get wet. [. . . ] If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, you are encouraged to try to correct the interference by one or more of the following measures: · Reorient or relocate the receiving antenna. · Connect the equipment to an outlet on a different circuit than the one to which the receiver is connected. · Consult the dealer or an experienced radio/TV technician for help. NOTICE FCC WARNING Thai · Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. · Proper connections must be used for connection to a host computer and/or peripherals in order to meet FCC emission limits. Korean S. Chinese Arabic 3 Welcome Welcome English Introducing the QuietComfort® 3 Acoustic Noise Cancelling® headphones Thank you for purchasing the QuietComfort® 3 Acoustic Noise Cancelling® headphones from Bose. Our innovative technologies enable these on-ear headphones to reduce unwanted distractions while providing you with lifelike audio performance and a comfortable fit. Adjustable headband Japanese Rotating earcups L (left) mark Replaceable ear cushions R (right) mark Power switch with power indicator Accessories included: N. America/Japan China Ports Headphones audio cord Dual-plug adapter Thai Battery charger Europe Korea U. K. /Hong-Kong/ Singapore Australia/New Zealand Tr. Chinese Korean Batteries Battery charger plug adapters Carrying case IMPORTANT: Before initial headphone use, it is important to fully charge the battery for a minimum of two hours. See "Charging the battery" on page 5. Arabic 4 Preparing Your Headphones Charging the battery Preparing Your Headphones English Initial charging time for a new battery is approximately two hours. After that, charging time varies depending on the battery charge state. 1 2 3 Indicator: On = Charging Off = Charging complete Flashing = See "Troubleshooting" on page 10. Japanese IMPORTANT: DO NOT STORE A BATTERY IN THE CHARGER. · After charging, unplug the battery charger and remove the battery. · Storing a battery in the charger diminishes the charged state of the battery over time and may permanently reduce the capacity of the battery. Battery handling and precautions · The battery does not have to be completely discharged in order to charge it. Battery charging should occur within the temperature range of 32°F (0°C) to 95°F (35°C). · A fully charged battery provides approximately 25 hours of use. Replace the battery when it no longer provides adequate power after charging. To order a replacement battery, see "Troubleshooting" on page 10. · Keep the terminals on the battery, in the charger, and in the right earcup of the headphones clean at all times. Dirty terminals may cause poor electrical connections and affect performance. For cleaning instructions, see "Cleaning" on page 10. Thai Korean S. Chinese Arabic 5 Preparing Your Headphones English Installing the battery Be sure to fully charge the battery before first use. Be sure to push the battery all the way in until it is flush with the earcup. [. . . ] Crackling noise; intermittent loss of · Clean the contacts on the battery and in the battery noise reduction compartment. · Make sure the air temperature is within the acceptable range for charging, 32° F (0°C) to 95° F (35°C). · Replace the charger. Charger indicator is flashing Korean Arabic Tr. Chinese Short battery life after charging 10 Care and Maintenance Reattaching earcup cushions If an earcup cushion becomes detached from the earcup: 1. [. . . ]