ENGLISHseconds. The headset beeps twice, andthe red and green indicator lightsalternate 5 times.TroubleshootingIf you cannot connect the headset toyour compatible phone, check that theheadset is charged, switched on, andpaired with the phone.Battery informationThis device has an internal,nonremovable, rechargeable battery. Donot attempt to remove the battery fromthe device as you may damage thedevice. The battery can be charged anddischarged hundreds of times, but it willeventually wear out. Recharge yourbattery only with Nokia approvedchargers designated for this device. Useof an unapproved charger may present arisk of fire, explosion, leakage, or otherhazard.If a battery is being used for the first timeor if the battery has not been used for aprolonged period, it may be necessary toconnect the charger, then disconnect andreconnect it to begin charging thebattery. If the battery is completelydischarged, it may take several minutesbefore the charging indicator light isdisplayed.Unplug the charger from the electricalplug and the device when not in use. Donot leave a fully charged batteryconnected to a charger, sinceovercharging may shorten its lifetime. Ifleft unused, a fully charged battery willlose its charge over time.Always try to keep the battery between15°C and 25°C (59°F and 77°F). Extremetemperatures reduce the capacity andlifetime of the battery. A device with a