Nokia BH-905 User Guide - Page 12

Basic use 3. Basic use ■ Place the headset over the head Turn the speaker pads towards each other, and place the headset over your head so that the pads rest comfortably on your ears. Place the pad indicated with L on the left ear and the pad with R on the right ear. Adjust the headband length for the best fit. Warning: When you use the headset, your ability to hear outside sounds may be affected. Do not use the headset where it can endanger your safety. When you stop using the headset, ensure that active noise cancellation is deactivated to save battery power. ■ Active noise cancellation Active noise cancellation reduces ambient noise in noisy environments. You can also use active noise cancellation for noise reduction, for example, on an airplane when Bluetooth connectivity is deactivated and the CA-143U audio cable is not connected to the headset. To activate active noise cancellation, slide the power key for active noise cancellation toward the charger connector. The indicator light for charging and active noise cancellation is displayed green. To deactivate active noise cancellation, slide the power key away from the charger connector. The indicator light for charging and active noise cancellation turns off. ■ Adjust the volume To adjust the headset volume, press the volume up or down key during a call or while listening to music. To adjust the volume quickly, press and hold either key. You can also adjust the volume on the connected device if it supports this feature with the headset. 12